With no family history, head injury, fever or drugs what would cause a 16yo to have 2 seizures upon waking.its been 15 years and not another one since?

Seizures ave many ca: Many seizures are caused by unknown factors causing irritability of the cerebral cortex. The fact that your son has not had a seizure ib 15 years is certainly encouraging. A medical neurologist is the specialist to consult. Eeg's may be helpful in reassuring you about the long term outlook.

Teen onset seizures: Ideopathic seizures frequently occur in adolescence. There are many factors that can contribute, i.e. Sleep deprivation, alcohol or drug ingestion, etc. If a recurrence were to happen, it usually occurs within 2 years. Since it is 15 years, i would not expect any further seizures.