If you suspect that you or your child has chickenpox, consult your doctor. He or she usually can diagnose chickenpox by examining the rash and by noting the presence of accompanying symptoms. Your doctor can also prescribe medications to lessen the severity of chickenpox and treat complications, if necessary. Be sure to call ahead for an appointment and mention you think you or your child has chickenpox, to avoid waiting and possibly infecting others in a waiting room.