Epilepsy, Juvenile Absence 1, also known as epilepsy, juvenile absence, susceptibility to, 1, is related to epilepsy, idiopathic generalized 11 and lactose intolerance, and has symptoms including seizures, absence attacks and absence seizures. An important gene associated with Epilepsy, Juvenile Absence 1 is EFHC1 (EF-Hand Domain Containing 1). The drugs Ethosuximide and Lamotrigine have been mentioned in the context of this disorder. Affiliated tissues include eye, and related phenotype is Resistant to vaccinia virus (VACV-A4L) infection.