Headache & Pain
SUNCT/SUNA are relatively rare but are very severe forms of primary headache syndromes belonging to the family of trigeminal autonomic cephalalgias. SUNCT is comprised of brief attacks of moderate-to-severe pain lasting 5 to 240 seconds, with associated autonomic disturbances of conjunctival injection, lacrimation, rhinorrhea or nasal congestion, ptosis, or eyelid edema. In SUNCT there must be both conjunctival injection and lacrimation present; in SUNA autonomic symptoms may include either conjunctival injection, lacrimation, or neither, but not both.
Oct. 11, 2020