Pressing pain at 10 centimeters below the armpit may be caused by skin inflammation, myofasciitis, rib lesions and so on. 1. Skin inflammation: such as sebaceous cysts combined with infection, boils, herpes zoster and other inflammatory diseases of the skin, due to the stimulation of inflammatory factors, can cause obvious pressure pain. 2. Myofasciitis: acute injury or chronic strain of muscles and fascia can cause congestion and edema of axillary myofascia, resulting in pain when pressed. 3. Rib lesions: rib chondritis, rib osteochondritis, rib fracture and other rib lesions can cause pain when pressed. It is recommended to go to the hospital in time to clarify the cause of the pain in the armpit 10 centimeters below the armpit, and carry out standardized treatment under the guidance of doctors.