There is considerable variation in the frequency of reflex anoxic seizures. Some subjects undoubtedly only ever have a single attack whilst other well-documented cases have multiple daily attacks. The attacks have been reported to generally reach a peak in frequency towards the end of the first or beginning of the second year of life. Reflex anoxic seizures occur in otherwise normal children, although there is no reason to suppose that children with disorders such as cerebral palsy and mental retardation are protected from them. They usually start in infancy or early childhood. Presumably because the precipitants to the attacks generally require a degree of mobility, descriptions of reflex anoxic seizures before the age of 6 months are rare. Also, there are many descriptions of attacks starting in later childhood and in adult life, although in such cases, the precipitants tend to be different, for example, involving bloodletting (Roddy et al. 1983) or dental extractions.
Reflex asystolic syncope
Reflex syncope
Laughter-induced syncope
Heat syncope
Hair-grooming syncope
Transient loss of consciousness
False awakening
Reflex seizure