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.
Chronic Daily Headache. A patient who has headaches as many days as not â at least 15 days a month â is said to have chronic daily headache (CDH). CDH is not a specific type of headache, but rather a descriptive term applied to any number of headache types. mixture of types (most commonly migraine and tension).