My son is having many unusual health problems? please answer!!?

over the past year my 14 year old son has been having frequent health issues. he has had the shingles virus two times, appendicitis, and extreme joint and back pain. he had a 105 fever and was hospitalized for bronchitis last week, he is currently being tested for an immune deficiency. he also had a thyroglossal cyst on his throat removed at age 5. he also has a recurrent red rash across his nose and cheeks. sometimes its on the side of his neck and chronic fatigue. also the shingles were never cultured..just thought i'd give a little extra info