Short-lasting unilateral neuralgiform headache with cranial autonomic symptoms (SUNA) or short-lasting unilateral neurlgiform headache with conjunctival injection and tearing (SUNCT) can occur spontaneously or be triggered by certain events.
SUNA or SUNCT can be triggered by:
(1) touch
(2) stress
(3) being tired
(4) travel
(5) weather
(6) change in temperature
(7) chewing or eating
(8) washing face or bathing/showering
(9) brushing teeth
(10) washing or brushing hair
(11) exercise
(12) shaving
(13) blowing nose
(14) alcohol
(15) exposure to smoke
(16) certain smells
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