{"Name":"Erdheim-Chester disease","DiseaseID__c":"GARD:0006369","id":6369,"encodedName":"erdheim-chester-disease","IsDeleted":false,"Disease_Name_Full__c":"Erdheim-Chester disease","Xref_IDs__c":"423022947; 699537002; 703711007; C0878675; C53972; D031249; DOID:4329; MEDGEN:163902; MONDO:0018153; ORPHA:35687","USA_Estimate__c":null,"No_of_Specialist_Tagsa__c":2,"No_of_ClinGen_records__c":0,"No_of_GeneReviews__c":0,"No_of_HHS_records__c":2,"World_Estimate__c":null,"No_of_HRSA_records__c":0,"Evidence_Based_Score__c":2,"No_of_Disease_Descriptions__c":3,"Disease_Characteristics_Score__c":6,"No_of_Age_at_Onset__c":1,"Description_Source__c":"MONDO:0018153","Disease_Description__c":"Erdheim-Chester disease (ECD), a non-Langerhans form of histiocytosis, is a multisystemic disease characterized by various manifestations such as skeletal involvement with bone pain, exophthalmos, diabetes insipidus, renal impairment and central nervous system (CNS) and/or cardiovascular involvement.","GARD_Name__c":"Erdheim-Chester disease","GARD_Synonym__c":"erdheim chester disease; erdheim-chester syndrome; lipogranulomatosis; lipoid granulomatosis; polyostotic sclerosing histiocytosis","Curated_Disease_Description_Source__c":"GARD:0006369","Curated_Disease_Description__c":"Erdheim-Chester disease is a rare type of slow-growing blood cancer called a histiocytic neoplasm, which results in overproduction of cells called histiocytes. Histiocytes normally function to destroy foreign substances and protect the body from infection. In Erdheim-Chester disease, the excess production of histiocytes (histiocytosis) leads to inflammation that can damage organs and tissues throughout the body, causing them to become thickened, dense, and scarred (fibrotic); this tissue damage may lead to organ failure. People with Erdheim-Chester disease often have bone pain, especially in the lower legs and upper arms, due to an abnormal increase in bone density (osteosclerosis). Damage to the pituitary gland (a structure at the base of the brain that produces several hormones, including a hormone that controls the amount of water released in the urine) may result in hormonal problems such as a condition called diabetes insipidus that leads to excessive urination. Abnormally high pressure of the cerebrospinal fluid within the skull (intracranial hypertension) caused by accumulation of histiocytes in the brain may result in headaches, seizures, cognitive impairment, or problems with movement or sensation. People with this condition can also have shortness of breath, heart or kidney disease, protruding eyes (exophthalmos), skin growths, or inability to conceive a child (infertility). Affected individuals may also experience fever, night sweats, fatigue, weakness, and weight loss. The signs and symptoms of Erdheim-Chester disease usually appear between the ages of 40 and 60, although the disorder can occur at any age. The severity of the condition varies widely; some affected individuals have few or no associated health problems, while others have severe complications that can be life-threatening.","Curated_USA_Estimate_Source__c":null,"Curated_USA_Estimate__c":null,"Age_at_Onset_Snippet_Text__c":"as an Adult","SourceID__c":"ORPHA:35687","Deprecated__c":"No","Disease_Concept_Type__c":"Rare Disease Entity","MONDO_ID__c":"MONDO:0018153","ORPHANET_ID__c":"ORPHA:35687","Replaced_By_ID__c":null,"Display_Spanish_Disease_Name__c":"Enfermedad de erdheim-chester","Spanish_Description_Source__c":"ORPHA:35687","Spanish_Description__c":"La enfermedad de Erdheim-Chester (ECD), una forma de histoicitosis no-Langerhans, es una enfermedad multisistémica caracterizada por diferentes manifestaciones como afectación esquelética con dolor óseo, exoftalmos, diabetes insípida, insuficiencia renal y afectación del sistema nervioso central (SNC) y/o cardiovascular.","Spanish_Disease_Name__c":"enfermedad de erdheim-chester","Spanish_GARD_Synonym__c":null,"Category_Linearization__c":"ORPHA:98023","icd10_id__c":null,"mesh_id__c":null,"omim_id__c":null,"snomed_id__c":null,"umls_id__c":null,"GARD_Disease__c":[{"Curated_Disease_Description__c":"Erdheim-Chester disease is a rare type of slow-growing blood cancer called a histiocytic neoplasm, which results in overproduction of cells called histiocytes. Histiocytes normally function to destroy foreign substances and protect the body from infection. In Erdheim-Chester disease, the excess production of histiocytes (histiocytosis) leads to inflammation that can damage organs and tissues throughout the body, causing them to become thickened, dense, and scarred (fibrotic); this tissue damage may lead to organ failure. People with Erdheim-Chester disease often have bone pain, especially in the lower legs and upper arms, due to an abnormal increase in bone density (osteosclerosis). Damage to the pituitary gland (a structure at the base of the brain that produces several hormones, including a hormone that controls the amount of water released in the urine) may result in hormonal problems such as a condition called diabetes insipidus that leads to excessive urination. Abnormally high pressure of the cerebrospinal fluid within the skull (intracranial hypertension) caused by accumulation of histiocytes in the brain may result in headaches, seizures, cognitive impairment, or problems with movement or sensation. People with this condition can also have shortness of breath, heart or kidney disease, protruding eyes (exophthalmos), skin growths, or inability to conceive a child (infertility). Affected individuals may also experience fever, night sweats, fatigue, weakness, and weight loss. The signs and symptoms of Erdheim-Chester disease usually appear between the ages of 40 and 60, although the disorder can occur at any age. The severity of the condition varies widely; some affected individuals have few or no associated health problems, while others have severe complications that can be life-threatening.","Curated_Disease_Description_Source__c":"GARD:0006369","GARD_Synonym__c":"erdheim chester disease; erdheim-chester syndrome; lipogranulomatosis; lipoid granulomatosis; polyostotic sclerosing histiocytosis","Name":"Erdheim-Chester disease","estimateUsa":""}],"Organization_Supported_Diseases__c":[{"Account_Name__c":"Histiocytosis Association of Canada","Website__c":"https://histiocytosis.ca/"},{"Account_Name__c":"Histio Connect UK","Website__c":"https://histioukconnect.org/"},{"Account_Name__c":"Histiocytosis Association","Website__c":"https://www.histio.org/"},{"Account_Name__c":"ECD Global Alliance","Website__c":"https://erdheim-chester.org/"},{"Account_Name__c":"Histio UK","Website__c":"https://www.histiouk.org/"}],"GARD_Disease_Tag__c":[{"Tag_Name__c":"Rheumatology","Tag_Category__c":"Specialist"},{"Tag_Name__c":"Dermatology","Tag_Category__c":"Account;Disease Category;Specialist","category_description":"Skin diseases, or integumentary system diseases, affect the skin, hair, nails, sweat glands, or oil glands.","curated_tag_name":"Skin diseases"}],"Age_At_Onset__c":[{"Age_At_Onset__c":"Adult","Provided_By__c":"ORPHA:35687"}],"External_Identifier_Disease__c":[{"URL__c":"https://www.ncbi.nlm.nih.gov/mesh/C031249","Source__c":"C0878675; MONDO:0018153","Xref__c":"D031249"},{"URL__c":"https://uts.nlm.nih.gov/uts/umls/concept/C0878675","Source__c":"C0878675","Xref__c":"C0878675"},{"URL__c":"https://www.orpha.net/en/disease/detail/35687","Source__c":"C0878675; MONDO:0018153; ORPHA:35687","Xref__c":"ORPHA:35687"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=699537002","Source__c":"C0878675; MONDO:0018153","Xref__c":"699537002"},{"URL__c":"https://www.ebi.ac.uk/ols4/ontologies/doid/classes?obo_id=DOID%3A4329","Source__c":"MONDO:0018153","Xref__c":"DOID:4329"},{"URL__c":"https://evsexplore.semantics.cancer.gov/evsexplore/concept/ncit/C53972","Source__c":"C0878675; MONDO:0018153","Xref__c":"C53972"},{"URL__c":"https://www.ncbi.nlm.nih.gov/medgen/?term=163902","Source__c":"C0878675","Xref__c":"MEDGEN:163902"},{"URL__c":"https://medlineplus.gov/genetics/condition/erdheim-chester-disease","Source__c":"GARD:0006369","Xref__c":"https://medlineplus.gov/genetics/condition/erdheim-chester-disease"},{"URL__c":"http://purl.obolibrary.org/obo/MONDO_0018153","Source__c":"GARD:0006369","Xref__c":"MONDO:0018153"},{"URL__c":"https://browser.ihtsdotools.org/?perspective=full&conceptId1=703711007","Source__c":"C0878675","Xref__c":"703711007"},{"URL__c":"https://secure.ssa.gov/apps10/poms.nsf/lnx/0423022947","Xref__c":"423022947"}],"GARD_Disease_Feature__c":[{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Rhythmic, involuntary oscillations of one or both eyes related to abnormality in fixation, conjugate gaze, or vestibular mechanisms.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000639","HPO_Synonym__c":"Involuntary, rapid, rhythmic eye movements","HPO_Name__c":"Nystagmus","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Difficult or labored breathing. Dyspnea is a subjective feeling only the patient can rate, e.g., on a Borg scale.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002094","HPO_Synonym__c":"Abnormal breathing; Breathing difficulty; Difficult to breathe; Difficulty breathing; Shortness of breath; Trouble breathing","HPO_Name__c":"Dyspnea","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormal increase of bone mineral density, that is, of the amount of matter per cubic centimeter of bones which is often referred to as osteosclerosis. Osteosclerosis can be detected on radiological examination as an increased whiteness (density) of affected bones.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0011001","HPO_Synonym__c":"Increased bone density; Increased bone mineral density; Osteosclerosis; Osteosclerosis of bones","HPO_Name__c":"Increased bone mineral density","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Severe distention of the kidney with dilation of the renal pelvis and calices.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000126","HPO_Name__c":"Hydronephrosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Ataxia refers to impaired coordination of voluntary muscle movement. Cerebellar ataxia refers to ataxia due to dysfunction of the cerebellum. This causes a variety of elementary neurological deficits including asynergy (lack of coordination between muscles, limbs and joints), dysmetria (lack of ability to judge distances that can lead to under- or overshoot in grasping movements), and dysdiadochokinesia (inability to perform rapid movements requiring antagonizing muscle groups to be switched on and off repeatedly).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001251","HPO_Synonym__c":"Cerebellar ataxia","HPO_Name__c":"Ataxia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Body temperature elevated above the normal range.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001945","HPO_Synonym__c":"Fever; Hyperthermia; Pyrexia","HPO_Name__c":"Fever","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"An abnormality of the pericardium, i.e., of the fluid filled sac that surrounds the heart and the proximal ends of the aorta, vena cava, and the pulmonary artery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001697","HPO_Synonym__c":"Abnormality of the pericardium","HPO_Name__c":"Abnormal pericardium morphology","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A state of excessive water intake and hypotonic (dilute) polyuria. Diabetes insipidus may be due to failure of vasopressin (AVP) release (central or neurogenic diabetes insipidus) or to a failure of the kidney to respond to AVP (nephrogenic diabetes insipidus).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000873","HPO_Name__c":"Diabetes insipidus","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Osteolysis refers to the destruction of bone through bone resorption with removal or loss of calcium.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002797","HPO_Synonym__c":"Breakdown of bone; Increased bone resorption; Osteolytic defects of bones","HPO_Name__c":"Osteolysis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"Any abnormality of the aortic valve.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001646","HPO_Synonym__c":"Abnormality of the aortic valve","HPO_Name__c":"Abnormal aortic valve morphology","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Osteomyelitis is an inflammatory process accompanied by bone destruction and caused by an infecting microorganism.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002754","HPO_Synonym__c":"Bone infection","HPO_Name__c":"Osteomyelitis","Feature_System__c":"Musculoskeletal System; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"A subjective feeling of tiredness characterized by a lack of energy and motivation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012378","HPO_Synonym__c":"Fatigue; Tired; Tiredness","HPO_Name__c":"Fatigue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) localized to bone.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002653","HPO_Synonym__c":"Bone pain","HPO_Name__c":"Bone pain","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005200","HPO_Name__c":"Retroperitoneal fibrosis","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of an abnormality of cardiac function that is responsible for the failure of the heart to pump blood at a rate that is commensurate with the needs of the tissues or a state in which abnormally elevated filling pressures are required for the heart to do so. Heart failure is frequently related to a defect in myocardial contraction.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001635","HPO_Synonym__c":"Cardiac failure; Cardiac failures; Cardiac insufficiency; CHF; Chronic heart failure; Heart failure","HPO_Name__c":"Congestive heart failure","Feature_System__c":"Cardiovascular System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Hypogonadotropic hypogonadism is characterized by reduced function of the gonads (testes in males or ovaries in females) and results from the absence of the gonadal stimulating pituitary hormones: follicle stimulating hormone (FSH) and luteinizing hormone (LH).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000044","HPO_Synonym__c":"Hypogonadotrophic hypogonadism; Low gonadotropins (secondary hypogonadism)","HPO_Name__c":"Hypogonadotropic hypogonadism","Feature_System__c":"Endocrine System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Abnormal excessive perspiration (sweating) despite the lack of appropriate stimuli like hot and humid weather.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000975","HPO_Synonym__c":"Diaphoresis; Excessive sweating; Increased sweating; Profuse sweating; Sweating; Sweating profusely; Sweating, increased","HPO_Name__c":"Hyperhidrosis","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Reduction of total body weight.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001824","HPO_Synonym__c":"Loss of weight","HPO_Name__c":"Weight loss","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An eye that is protruding anterior to the plane of the face to a greater extent than is typical.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000520","HPO_Synonym__c":"Anterior bulging of the globe; Anterior bulging of the globe of eye; Bulging eye; Exophthalmos; Eyeballs bulging out; Ocular proptosis; Prominent eyes; Prominent globes; Protruding eyes; Protrusio bulbi","HPO_Name__c":"Proptosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A disease where there is cellular death (necrosis) of bone components due to interruption of the blood supply.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010885","HPO_Synonym__c":"Aseptic bone necrosis; Aseptic necrosis; Bone infarction; Death of bone due to decreased blood supply; Ischemic bone necrosis; Osteochondronecrosis; Osteonecrosis","HPO_Name__c":"Avascular necrosis","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Hyperreflexia is the presence of hyperactive stretch reflexes of the muscles.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001347","HPO_Synonym__c":"Increased deep tendon reflexes; Increased reflexes","HPO_Name__c":"Hyperreflexia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A sudden, audible expulsion of air from the lungs through a partially closed glottis, preceded by inhalation.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0012735","HPO_Synonym__c":"Cough; Coughing","HPO_Name__c":"Cough","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A functional abnormality of the immune system.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0010978","HPO_Name__c":"Abnormality of immune system physiology","Feature_System__c":"Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"Excessive thirst manifested by excessive fluid intake.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001959","HPO_Synonym__c":"Extreme thirst","HPO_Name__c":"Polydipsia","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction in the level of performance of the kidneys in areas of function comprising the concentration of urine, removal of wastes, the maintenance of electrolyte balance, homeostasis of blood pressure, and calcium metabolism.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000083","HPO_Synonym__c":"Renal failure; 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There are situations when severe nausea may be present without emesis and less frequently, when emesis may be present without preceding nausea.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002017","HPO_Synonym__c":"Nausea and vomiting","HPO_Name__c":"Nausea and vomiting","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The presence of an excessive amount of fluid in the pleural cavity.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002202","HPO_Synonym__c":"Fluid around lungs","HPO_Name__c":"Pleural effusion","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Visual impairment (or vision impairment) is vision loss (of a person) to such a degree as to qualify as an additional support need through a significant limitation of visual capability resulting from either disease, trauma, or congenital or degenerative conditions that cannot be corrected by conventional means, such as refractive correction, medication, or surgery.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000505","HPO_Synonym__c":"Impaired vision; Loss of eyesight; Poor vision; Visual impairment","HPO_Name__c":"Visual impairment","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Description__c":"An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) and perceived to originate in the abdomen.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002027","HPO_Synonym__c":"Abdominal pain; Pain in stomach; Stomach pain","HPO_Name__c":"Abdominal pain","Feature_System__c":"Digestive System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An anomaly of epiphysis, which is the expanded articular end of a long bone that developes from a secondary ossification center, and which during the period of growth is either entirely cartilaginous or is separated from the shaft by a cartilaginous disk.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0005930","HPO_Synonym__c":"Abnormal shape of end part of bone; Abnormality of epiphysis morphology; Abnormality of the epiphyses; Anomaly of the epiphyses; Epiphyseal abnormality","HPO_Name__c":"Abnormal epiphysis morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"The upper eyelid margin is positioned 3 mm or more lower than usual and covers the superior portion of the iris (objective); or, the upper lid margin obscures at least part of the pupil (subjective).","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000508","HPO_Synonym__c":"Blepharoptosis; Drooping upper eyelid; Eyelid ptosis; Palpebral ptosis","HPO_Name__c":"Ptosis","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Replacement of normal lung tissues by fibroblasts and collagen.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0002206","HPO_Synonym__c":"Pulmonary scarring","HPO_Name__c":"Pulmonary fibrosis","Feature_System__c":"Respiratory system","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"The presence of xanthomata in the skin of the eyelid.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001114","HPO_Synonym__c":"Fatty deposits in skin around the eyes; Fatty deposits on eyelids; Xanthelasma palpebrarum; Xanthoma","HPO_Name__c":"Xanthelasma","Feature_System__c":"Skin System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A red eruption of the skin.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000988","HPO_Synonym__c":"Skin rash","HPO_Name__c":"Skin rash","Feature_System__c":"Skin System; Immune System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Very frequent (80-99%)","Feature__r":{"HPO_Description__c":"An abnormality of one or more metaphysis, i.e., of the somewhat wider portion of a long bone that is adjacent to the epiphyseal growth plate and grows during childhood.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0000944","HPO_Synonym__c":"Abnormality of the wide portion of a long bone","HPO_Name__c":"Abnormal metaphysis morphology","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Dysarthric speech is a general description referring to a neurological speech disorder characterized by poor articulation. Depending on the involved neurological structures, dysarthria may be further classified as spastic, flaccid, ataxic, hyperkinetic and hypokinetic, or mixed.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001260","HPO_Synonym__c":"Difficulty articulating speech; Dysarthric speech","HPO_Name__c":"Dysarthria","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"A reduction in erythrocytes volume or hemoglobin concentration.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001903","HPO_Synonym__c":"Anaemia; Low number of red blood cells or hemoglobin","HPO_Name__c":"Anemia","Feature_System__c":"Blood and Blood-Forming Tissue","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Frequent (30-79%)","Feature__r":{"HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001386","HPO_Synonym__c":"Joint swelling","HPO_Name__c":"Joint swelling","Feature_System__c":"Musculoskeletal System","HPO_Feature_Type__c":"Symptom"}},{"Provided_By__c":"ORPHA:35687","HPO_Frequency__c":"Occasional (5-29%)","Feature__r":{"HPO_Description__c":"Any structural abnormality of the cerebellum.","HPO_Feature_URL__c":"https://hpo.jax.org/browse/term/HP:0001317","HPO_Synonym__c":"Abnormality of the cerebellum; Cerebellar abnormalities; Cerebellar abnormality; Cerebellar anomaly; Cerebellar signs","HPO_Name__c":"Abnormal cerebellum morphology","Feature_System__c":"Nervous System","HPO_Feature_Type__c":"Symptom"}}],"tags":{"Specialist":["Rheumatology","Dermatology"],"Account":["Dermatology"],"Disease Category":["Dermatology"]},"synonyms":["erdheim chester disease"," erdheim-chester syndrome"," lipogranulomatosis"," lipoid granulomatosis"," polyostotic sclerosing histiocytosis"]}