My Grandson Is 20 Years Old. Has Epilepsy And Asthma.

My grandson is 20 years old. Has epilepsy and asthma. He has had symptoms of pains in his abdomen and continuous vomiting along with a headache. He is now in the hospital because they don't seem to know what is wrong with him. Nothing helps the pain in his stomach and the anti-nausea medication does not help either.