Lymph nodes are small swelling which are present on different areas of the body. These lymph nodes contain lymph and are part of immune system. Lymph nodes of the groin area swell due to many reasons, like local infection of the groin area, hernia, testicular torsion, hydrocele, drug reaction, viral infection and cancer. So, you should visit a doctor for differential diagnosis and proper treatment.
Swollen lymph node about 12 months also cold urticaria 12 months feeling exhausted and slight delayed memory sometimes