Merck Manual

Please confirm that you are not located inside the Russian Federation

honeypot link

Short-Lasting Unilateral Neuralgiform Headache With Conjunctival Injection and Tearing (SUNCT)

By

Stephen D. Silberstein

, MD, Sidney Kimmel Medical College at Thomas Jefferson University

Last full review/revision Jul 2021| Content last modified Jul 2021
Click here for the Professional Version

Short-lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), a rare disorder, resembles cluster headaches. It usually causes short but frequent bouts of pain around the eye on one side of the head.

Because of their similarities, SUNCT and cluster headaches Cluster Headaches A cluster headache causes severe pain that is felt at the temple or around the eye on one side of the head and that lasts a relatively short time (usually 30 minutes to 1 hour). It is accompanied... read more are often grouped together as trigeminal autonomic cephalgias. Trigeminal autonomic cephalgias also include chronic paroxysmal hemicrania, and hemicrania continua—all very rare disorders.

Usually, pain occurs around the eye on one side of the head. People may have up to 200 bouts of pain a day, and the pain may last from 5 seconds to over 4 minutes. The affected eye is red (called conjunctival injection) and frequently waters (tears).

Doctors diagnose SUNCT based on symptoms. Magnetic resonance imaging (MRI) is done to rule out other causes.

Treatment of SUNCT

  • Lidocaine

  • To prevent attacks, antiseizure drugs or injection of certain drugs

Lidocaine (an anesthetic) is given intravenously to relieve immediate pain.

To prevent attacks, doctors may give people antiseizure drugs (such as lamotrigine, topiramate, or gabapentin) or inject drugs to block or stimulate the nerve that supplies the affected eye (optic nerve).

Drugs Mentioned In This Article

Generic Name Select Brand Names
LAMICTAL
TOPAMAX
NEURONTIN
XYLOCAINE
NOTE: This is the Consumer Version. DOCTORS: Click here for the Professional Version
Click here for the Professional Version
Others also read

Test your knowledge

Bell Palsy
Bell palsy is sudden weakness or paralysis of the muscles on one side of the face due to malfunction of the seventh cranial nerve. This nerve moves facial muscles, stimulates salivary and tear glands, detects tastes, and controls a muscle involved in hearing. Which of the following is often the first symptom of Bell palsy?
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID

Also of Interest

Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
TOP