seizures with Parkinson's Disease

Could anyone describe what a seizure with Parkinson's Disease looks like. My husband has Parkinson's and has recently appeared to have a minor seizure. He began to have uncontrollable shakes including the head, legs, arms, hands and feet. The first episode happed after a fall where he lay outdoors for over 2 hours. The second episode happened during a nap. He did not wake up during the episode and was difficult to wake. He had been extremely tired and very shaky prior to resting.

Thanks.

Thank you. Have called the neurologist and cannot get an appointment for 4 - 6 months. Family doctor says we have to deal with neurologist with this matter. If it happens again, I will likely call the ambulance and have the paramedics check him out or take him to hospital.