1 A rare cause of axillary swelling may be breast cancer or lymphoma. 2  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.3  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.
Finger nail splitting and hypothyroidism. Hello, I have been hypothyroid for over 20 years. Years ago I started to notice a problem with my left thumb which would keep splitting vertically. Over the years it has spread to about 5 of my fingers at different times. I have to keep nails shorter than I would like like but they still split. Just be chance the other day I read online that vertical splitting is caused by under active thyroid. Anyone have this same problem and have you found a solution. Thanks.
Other medical conditions that can cause brittle nails include anemia (low blood count), thyroid disorders, and certain skin disorders such as lichen planus or psoriasis. It is important to see your primary care doctor or dermatologist to determine the cause of your symptoms and discuss the appropriate treatment.