I Just Picked My 18 Year Old Son Up From

I just picked my 18 year old son up from work. I was told he hit his elbow really hard, complained it hurt, and the went into a seizure. His manager said it was quick and that he came out very fast. He did not foam at the mouth or any other normal seizure side effects. I've looked online about this weird occurance and it seems like an actual 'thing' that can happen. People fainting/seizing after hitting elbow. He is home with me now and I am watching him but my question is, should I take him to ER or Urgent Care?