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  3. Paroxysmal hemicrania
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Paroxysmal hemicrania


Title




Categories:
Nervous System Diseases

Summary Summary


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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.
orphanet

Orpha Number: 157835

Definition
A rare primary headache disorder characterized by multiple attacks of unilateral pain that occur in association with ipsilateral cranial autonomic symptoms. The hallmarks of this syndrome are the relative shortness of the attacks and the complete response to indomethacin therapy.

Epidemiology
Paroxysmal hemicrania (PH) prevalence is unknown. There is a male-to-female ratio of 1:1.

Clinical description
The mean age of onset is 40 years (range 3-81 years). PH patients experience purely unilateral, severe to very severe attacks of head pain. The pain is often in the temporal, orbital or supraorbital region. The pain has an abrupt start and cessation and is accompanied by ipsilateral autonomic features, including lacrimation, conjunctival injection, rhinorrhoea, nasal congestion, periorbital oedema, facial flushing, miosis and/or ptosis. PH attacks last 2-30 minutes and occur more than 5 times a day up to 40 times a day with a mean of 11 a day. Patients can have unilateral photophobia and phonophobia ipsilateral to the side of the attack. Osmophobia, nausea or vomiting during the attacks has been reported. Although attacks are most usually spontaneous, attacks can be triggered by neck movements, or pressure over the neck or greater occipital nerves. PH can be classified as episodic or chronic, depending on the duration of pain-free period when untreated. Episodic paroxysmal hemicrania patients have bouts lasting from 7 days to 1 year and separated by pain-free periods more than 3 months, whereas in chronic patients the pain-free period is less than 3 months. As this is a primary headache disorder, patients have normal neurological tests.

Etiology
Etiology remains unclear.

Diagnostic methods
Diagnosis is based on clinical history and response to indomethacin. Patients with suspected paroxysmal hemicrania should undergo an oral indomethacin trial or placebo-controlled intramuscular indomethacin test. In adults, one could start with 25mg three times a day, titrating up to 75mg three times a day over the course of 3 weeks. With intramuscular indomethacin 100-200 mg could be used.

Differential diagnosis
Cluster headache is the main differential diagnosis, given the overlap in duration of the attacks. It is very important to differentiate PH from cluster headache, as treatment differs greatly.

Genetic counseling
Rare cases of familial PH have been reported.

Management and treatment
A complete response to indomethacin confirms the diagnosis of PH. Treatment with indomethacin with a median dose of 150 mg/day (ranging from 30-300mg/day) results in dramatic relief of the disabling symptoms caused by PH.

Prognosis
This is a debilitating headache condition if not accurately diagnosed and managed.

Visit the Orphanet disease page for more resources.
Last updated: 10/1/2019

Symptoms Symptoms


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This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

Showing of 19 |
Medical Terms Other Names
Learn More:
HPO ID
80%-99% of people have these symptoms
Migraine
Intermittent migraine headaches
Migraine headache
Migraine headaches
[ more ]
0002076
Recurrent paroxysmal headache 0002331
30%-79% of people have these symptoms
Conjunctival hyperemia 0030953
Epiphora
Increased tears
Tearing
Watery eyes
[ more ]
0009926
Flushing 0031284
Phonophobia
Fear of loud sounds
0002183
Photophobia
Extreme sensitivity of the eyes to light
Light hypersensitivity
[ more ]
0000613
Ptosis
Drooping upper eyelid
0000508
Rhinitis
Nasal inflammation
0012384
Rhinorrhea
Runny Nose
0031417
5%-29% of people have these symptoms
Diabetes mellitus 0000819
Focal sensory seizure with olfactory features 0011161
Hypertension 0000822
Miosis
Constricted pupils
Pupillary constriction
[ more ]
0000616
Nausea and vomiting 0002017
Neck pain 0030833
Palpebral edema
Fullness of eyelids
Puffy eyelids
Puffy lids
Swelling of eyelids
[ more ]
0100540
Restless legs 0012452
Stiff neck
Neck stiffness
0025258
Showing of 19 |
Do you have more information about symptoms of this disease? We want to hear from you.
Last updated: 2/1/2021
Do you have updated information on this disease? We want to hear from you.

Research Research


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Research helps us better understand diseases and can lead to advances in diagnosis and treatment. This section provides resources to help you learn about medical research and ways to get involved.

Clinical Research Resources

  • Orphanet lists European clinical trials, research studies, and patient registries enrolling people with this condition. 

Organizations Organizations


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Support and advocacy groups can help you connect with other patients and families, and they can provide valuable services. Many develop patient-centered information and are the driving force behind research for better treatments and possible cures. They can direct you to research, resources, and services. Many organizations also have experts who serve as medical advisors or provide lists of doctors/clinics. Visit the group’s website or contact them to learn about the services they offer. Inclusion on this list is not an endorsement by GARD.

Organizations Supporting this Disease

  • American Headache Society
    19 Mantua Rd.
    Mount Royal, NJ 08061
    Telephone: +1-856-423-0043
    Fax: +1-856-423-0082
    E-mail: ahshq@talley.com
    Website: https://americanheadachesociety.org/
  • International Headache Society
    52-53 Russell Square
    London, WC1B 4HP United Kingdom
    Website: http://www.ihs-headache.org/
Do you know of an organization? We want to hear from you.

Learn More Learn More


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These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

Where to Start

  • The National Institute of Neurological Disorders and Stroke (NINDS) collects and disseminates research information related to neurological disorders. Click on the link to view information on this topic.

In-Depth Information

  • Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
  • MeSH® (Medical Subject Headings) is a terminology tool used by the National Library of Medicine. Click on the link to view information on this topic.
  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Paroxysmal hemicrania. Click on the link to view a sample search on this topic.

GARD Answers GARD Answers


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Questions sent to GARD may be posted here if the information could be helpful to others. We remove all identifying information when posting a question to protect your privacy. If you do not want your question posted, please let us know.

Have a question? Contact a GARD Information Specialist.
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