Glands in the back of my neck, under my jaw, behind my ear, in my arm pit and in my groin all on right side an have been enlarged for over a year. why

Get them checked: Swollen lymph nodes can be related to an infection and can be enlarged in certain areas of our body, such as the groin and arm pits normally. They are here to defend the body from infections. But, you should have them checked if it has been a year to rule out other causes of lymph node enlargement. Lymphoma is unlikely in the absence of other systemic symptoms such as fever and weight loss.