Migraine Variant Symptoms

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Article updated and reviewed by Peter B. Kang, MD, Assistant in Neurology, Children's Hospital Boston, and Instructor in Neurology, Harvard Medical School, Boston, MA on March 30, 2005.

A migraine is a specific and common form of headache that has been known since antiquity. It has traditionally been classified as a vascular headache due to the belief that it is due to abnormal changes in blood vessel tone, although the mechanism now appears to be more complicated than that.

Migraines affect...

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Understanding Cough Variant Asthma

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Common asthma symptoms are not present People with CVA do not generally have other common symptoms of asthma, such as wheezing, shortness of breath and chest tightness. Children are commonly diagnosed with CVA CVA is especially common in...