Back pain Back pain is very common and usually doesn’t have a serious cause. Learn about treatments, exercises and other ways to manage back pain. Behçet’s syndrome Behçet’s syndrome is very rare in the UK – only about 2,000 people have it. Learn about the causes, symptoms and treatments. Bursitis Bursitis is a condition that makes the area around a joint or bone painful, red and swollen and can affect both adults and children. Learn about the causes, symptoms, exercises and treatments.