<unk>  is an unusual but recognized form of situational<unk>  (fainting) likely to have a similar pathophysiological origin to tussive<unk> . One reported case occurred while a patient was watching the television show Seinfeld, and was given the name Seinfeld<unk> . There are few case reports of this syndrome in the literature. Patients, as in this case, might present initially to the emergency department, and<unk>  should be considered among the numerous differentials for<unk> .<unk>  should not be confused with cataplexy, a sudden loss of muscle tone triggered by strong emotions, particularly<unk> . Unlike<unk> , there is no loss of consciousness in cataplexy, which affects some sufferers of narcolepsy. To date there have been few cases of<unk>  documented in medical literature.
Laughter-induced syncope
Heat syncope
Reflex syncope
Reflex asystolic syncope
Postural orthostatic tachycardia syndrome
Hair-grooming syncope
Panic attack
Micturition syncope