1 The lymph nodes in the groin (femoral or inguinal lymph nodes) may swell from an injury or infection in the foot, leg, groin, or genitals. 2  In rare cases, testicular cancer, lymphoma, or melanoma may cause a lump in this area. Glands can also swell following an injury, such as a cut or bite, near the gland or when a tumor or infection occurs in the mouth, head, or neck. 2  Glands in the armpit (axillary lymph nodes) may swell from an injury or infection to the arm or hand. 3  A rare cause of axillary swelling may be breast cancer or lymphoma.
Gastroenteritis, also known as infectious diarrhea, is inflammation of the gastrointestinal tract that involves the stomach and small intestine. Signs and symptoms include some combination of diarrhea, vomiting, and abdominal pain. Fever, lack of energy, and dehydration may also occur. This typically lasts less than two weeks.
There are also many other less common causes of chronic diarrhea. Irritable bowel syndrome â Irritable bowel syndrome is one of the most common causes of chronic diarrhea. IBS can cause crampy abdominal pain and changes in bowel habits (diarrhea, constipation, or both). IBS can develop after having an infection.here are many possible causes of chronic diarrhea. Treatment is aimed at correcting the cause of diarrhea (whenever possible), firming up loose stools, and dealing with any complications of diarrhea. Chronic diarrhea can have a substantial impact on your quality of life and overall health.