Hallo, has your nephew been tested for Lyme Disease? LD is the second-fastest growing infectious disease in the US.
Many people do not remember being bitten by a tick. Infections can lie dormant, even from childhood and symptoms can be triggered by stressful life events. Blood tests for the disease are not reliable. Diagnosis is based on clinical symptoms and a history of exposure to ticks.
Often people associate LD with arthritis & joint problems. In fact symptoms of Lyme Disease can include severe depression and suicidal thoughts.
This is only a suggestion to research a little more and hopefully rule out the possibility of Lyme Disease.
I hope your nephew will find answers and begin on the road to recovery ... whatever is causing his illness.
Please check out all your lyme friends from Healingwell...