BPTI is an under recognized, self-limiting, benign disorder charactarized by recurrent episodes of head tilt secondary to     cervical dystonia (Snyder 1969). Attacks are often accompainied by vomitting, ataxia and pallor. Episodes occur without warning and with no specific triggering factors, although often with remarkable regularity. Episodes settle spontaneously, usually within a few hours, but may last upto 7 days only remitting in sleep. Episodes usually occur within the first 12 months of life and usually resolve by 5 years (but can be longer), occuring between 2 weeks and every 2 months. Infants may be hypotonic during an attack or have tortipelvis or an abnormal trunk posture.