If your child has been getting fever
every 1week that means her immunity is very weak .You need to get her thoroughly examined and investigated.At present she is probably suffering from viral infection with rash.Again she would require to be assessed by her pediatrician
.Regarding her seizures would like to know whether she is on any long term anti seizure medication
.if she is then alopecia
could be explained due to those medicines as well as due to recurrent illness.