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.
Tension headaches are dull pain, tightness, or pressure around your forehead or the back of your head and neck. Some people say it feels like a clamp squeezing the skull. Often called stress headaches, theyâre the most common type for adults. When you get them less than 15 days per month, theyâre called episodic tension headaches. If they happen more often, theyâre called chronic. These headaches can last from 30 minutes to a few days.