Headache & Pain
Cluster headache is a primary headache disorder characterized by severe, unilateral pain that is orbital, supraorbital, or temporal and 15 minutes to 3 hours in duration occuring 1 to 8 times a day. There are 2 major forms of cluster headache: episodic and chronic. Accompanying symptoms include ipsilateral: conjunctival injection, lacrimation, nasal congestion, rhinorrhea, facial sweating, eyelid edema, and miosis.
Jan. 17, 2021