Our online medical glossary of medical terms and definitions includes definitions for terms related to treatment, and general medicine
HISTAMINIC HEADACHE
A term used to describe a headache that is typified by constant, unilateralpainnear the eye, with onset generally within 2-3 hours of falling asleep. Can be accompanied by a blocked nasal passage, runny nose, and-or tearing. One may also announcement facial flushing, ptosis (dropping eyelid), facial swelling and constriction of the pupils.