Commonest cause of convulsions in a child with fever is:
a. Febrile convulsions(Ref: Nelson's 20/e p 2831-2856, Ghai 8/e p 557-561)Febrile seizures are the most common cause of convulsions in a child with fever.
Febrile convulsions
Meningitis
Epilepsy
Hypothyroidism
Central Nervous System