Hi,
Welcome to the ehealthforum and I am glad to help you out.
Idiopathic hypersomnia is sleeping too much (hypersomnia) without an obvious cause. It is usually treated with stimulant medications such as amphetamine, methylphenidate, and modafinil. Your doctor may try to use methylphenidate. Methylphenidate has high potential for abuse due to its pharmacological similarity to cocaine and amphetamines.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.