I had a son with a PDD diagnosis second axis Asperger s syndrome. He s 16 yrs of age, generally health. He was dx with asthma exacerbated by cold or influenza. He is currently taking Zyrtec for his seasonal allergies. Today he now has a high fiver, heart palpitations, nausea and not himself. He is very lethargic, yet generally stays up very late on the weekends. Today he went to be before 1130 p.m. The last time his fever spiked to 105 he began having seizures. I do not want an unnecessary trip to the emergency room. Please advise.