Hello, The acute phase of reactive arthritis should subside in 1-2 months. However, it is likely he will need to be under regular care of a rheumatologist as it is likely that he may develop other arthritic conditions like ankylosing spondylitis. He will be able to lead a normal life but may need some medicines intermittently for future joint pains and to prevent acute exacerbations. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Pranav Balakrishnan, General & Family Physician