[Severe hyperthermia in children].

In some children severe hyperthermia may be the result of fever that causes cellular damage. This can be seen histologically as cell necrosis. When hyperthermia occurs with collapse or with neurological symptoms it should lead to a search for other lesions (renal, hepatic and/or coagulation disorders). Treatment of these conditions may, in some cases, lead to improvement. Simple prophylactic measures and close supervision of febrile children should prevent this serious syndrome.