Is generalized epilepsy a progressive, degenerative disorder?

Not progressive. Epilepsy is the term we use for recurrent seizures which are not caused by tumor or degenerative brain diseases. Although epilepsy may begin at any age, it usually does not worsen or cause increasing problems over time. However, a prolonged seizure can do permanent harm, so it is important to work closely with a neurologist to keep seizures well-controlled on meds which aren't causing side effects.