Small but very sore lump under your armpit what does it mean should you be worried?

Swollen lymph nodes: Lymph nodes are small, bean-shaped glands that are part of the body's immune system. They can become swollen when they are fighting infection or inflammation. Lymph nodes in the armpit can become swollen due to infections or inflammation in the arm, chest, or breast.

Breast cysts: Breast cysts are fluid-filled sacs that can develop in the breast tissue. They are usually benign and not a cause for concern, but they can sometimes cause discomfort or pain. Breast cysts are more common in women between the ages of 30 and 50.

Fibroadenomas: Fibroadenomas are non-cancerous growths that can develop in the breast tissue. They are usually firm, round, and movable, and they can range in size from a small pea to a large marble. Fibroadenomas are most common in women between the ages of 20 and 30.

Skin infections: Skin infections, such as boils or abscesses, can also cause lumps under the armpit. Skin infections are usually red, swollen, and painful, and they may drain pus or fluid.

Muscle strain: A muscle strain can also cause a lump under the armpit. Muscle strains are usually caused by overuse of a muscle, and they can be painful and tender to the touch.

Lipomas: Lipomas are benign tumors that can develop in any part of the body, including the armpit. They are usually soft, fatty, and movable, and they can range in size from a small pea to a large grapefruit. Lipomas are most common in adults over the age of 40.

Lymphoma: Lymphoma is a type of cancer that starts in the lymph nodes. It can cause swollen lymph nodes in the armpit, as well as other symptoms such as fever, weight loss, and night sweats. Lymphoma is more common in adults over the age of 60.

Breast cancer: Breast cancer can also cause a lump under the armpit. Breast cancer is the most common cancer in women, and it is important to see a doctor if you have any new lumps or changes in your breasts.

If you have a lump under your armpit, it is important to see a doctor to get it checked out. Some lumps are harmless, while others can be a sign of a more serious condition. Your doctor will be able to determine the cause of the lump and recommend the best course of treatment.