Sorry to hear about your son. It sounds like they have caught things early though and with the correct meds he has a very good chance of going into remission. Read what you can and ask for advice. RA can be a very scary disease for everyone involved but the hospital should be able to put together a rheumatology team for him: this can include any specialists he needs to see like a physiotherapist, occupational therapist, counsellor, othotist etc. Don't be afraid to ask questions.
Dx: Panic Disorder, Psychotic Depression, Rheumatoid Arthritis
Rx: Humira, Methotrexate, Plaquenil, Prednisolone, Codeine, Diclofenic Sodium, Folic Acid, Propranolol, Citalopram