federal definition [10] of blindness in the Supplemental Security Incomeprogram under. Title XVI of the Social Security Act currently states: (2) An individual shall be considered to be blind for purposes of this title if he has central. visual acuity of 20/200 or less in the better eye with the use of a correcting lens. An eye.
Headache (Definition) The medical term is cephalalgia. It is a feeling of pain that can occur on either both sides or just one side of the head or neck. Headaches can be sharp, dull, or throbbing, and can radiate to different areas of the head. They typically last less than an hour but can last for several days.
Migraine is a primary headache disorder characterized by recurrent headaches that are moderate to severe. Typically, the headaches affect one half of the head, are pulsating in nature, and last from two to 72 hours. Associated symptoms may include nausea, vomiting, and sensitivity to light, sound, or smell.