Pain in the armpit 10 centimeters below the armpit may be related to conditions such as lymphadenitis, sebaceous cyst infection, and myofasciitis. 1. Lymphadenitis: soft tissue injury or skin infection in the armpit area may lead to inflammatory reaction in the lymph nodes, and the patient may have swollen and painful lymph nodes, and in severe cases, fever may occur. 2. Sebaceous cyst infection: As the sebaceous glands in the armpits are relatively exuberant in their secretion, inadequate cleansing may lead to blockage of the openings of the sebaceous glands, causing cysts. 3. Myofasciitis: Rather, it is due to the damage of the fascia and muscles in the area, and after being stimulated by external causes, myofascial edema, congestion, pain and other phenomena will occur. Pain in the armpit 10 centimeters is also seen in other causes, it is recommended to consult a doctor in a timely manner, under the guidance of a professional doctor to standardize the treatment, so as not to delay the condition.