Male 20 years old adverse reaction to an antibiotic Not previously allergic to antibiotics. Psychotic episodes , pupil dilation , headaches, hallucinations. The patient is actually my son who is currently in the mental health ward of the hospital. The Doctors there have never dealt with a drug reaction like this before and currently do not have any answers. He is taking seroquil twice a day and that has helped somewhat but his pupils are almost always dilated, he acts like he has just taken amphetamines and his brain races. Do you think his brain chemistry may have been altered or his neurotransmitters affected by this reaction? If so what could be a possible treatment?