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

By

Stephen D. Silberstein

, MD, Sidney Kimmel Medical College at Thomas Jefferson University

Reviewed/Revised Apr 2023
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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).

Short-lasting unilateral neuralgiform headache with cranial autonomic symptoms (SUNA) is similar to SUNCT. It differs from SUNCT in that it involves conjunctival injection (blood shot eyes) or tearing, but not both. Other symptoms of SUNCT and SUNA are similar. Both are short-lasting unilateral neuralgiform headaches.

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 medications or injection of certain medications

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

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

Drugs Mentioned In This Article

Generic Name Select Brand Names
7T Lido, Akten , ALOCANE, ANASTIA, AneCream, Anestacon, Aspercreme with Lidocaine, Astero , BenGay, Blue Tube, Blue-Emu, CidalEaze, DermacinRx Lidogel, DermacinRx Lidorex, DERMALID, Ela-Max, GEN7T, Glydo, Gold Bond, LidaMantle, Lidocan, Lidocare, Lidoderm, LidoDose, LidoDose Pediatric, Lidofore, LidoHeal-90, LIDO-K , Lidomar , Lidomark, LidoReal-30, LidoRx, Lidosense 4 , Lidosense 5, Lidosol, Lidosol-50, LIDO-SORB, Lidotral, Lidovix L, LIDOZION, Lidozo, LMX 4, LMX 4 with Tegaderm, LMX 5, LTA, Lydexa, Moxicaine, Numbonex, ReadySharp Lidocaine, RectaSmoothe, RectiCare, Salonpas Lidocaine, Senatec, Solarcaine, SUN BURNT PLUS, Tranzarel, Xyliderm, Xylocaine, Xylocaine Dental, Xylocaine in Dextrose, Xylocaine MPF, Xylocaine Topical, Xylocaine Topical Jelly, Xylocaine Topical Solution, Xylocaine Viscous, Zilactin-L, Zingo, Zionodi, ZTlido
Lamictal, Lamictal CD, Lamictal ODT, Lamictal XR, Subvenite
EPRONTIA, Qudexy XR, Topamax, Topamax Sprinkle, Topiragen , Trokendi XR
Active-PAC with Gabapentin, Gabarone , Gralise, Horizant, Neurontin
NOTE: This is the Consumer Version. DOCTORS: VIEW PROFESSIONAL VERSION
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