Painful underarm skin can be caused by folliculitis, purulent sweating, and eczema.
1. Folliculitis: the inflammatory reaction caused by bacterial infection of axillary hair follicles, clinically manifested as the formation of red, swollen, itchy and painful patches around the hair follicles, which can lead to the symptom of axillary skin pain.
2. Septic Sweatitis: a kind of chronic suppurative inflammation of the sweat glands of the top secretion, mainly occurring in the armpits, external genitalia, and perianal area, etc. It is mainly due to the contact of the sweat glands of the skin surface with the Staphylococcus aureus, triggered by a kind of inflammatory reaction, and when there is a septic sweating gland in the armpits, the self-consciousness of the pain and pressure pain.
3. Lymphadenitis: It can also cause pain in the armpits. Inflammation of the mammary glands often leads to enlargement of the lymph nodes in the armpits, which may be followed by acute inflammation, and tenderness may occur when the lymph nodes are pressed.
Axillary skin pain may also be shingles, trauma, etc. It is recommended to go to the hospital in time for examination and diagnosis, and choose the corresponding treatment under the guidance of the doctor.