What would cause a sore armpit?

Sore armpits can be caused by a variety of reasons. Some possible causes include:

- Swollen lymph nodes: Lymph nodes are small, bean-shaped glands in your body which help fight infection. They can swell when you have an infection. Swollen lymph nodes in the armpit can be caused by a wide variety of infections, including sore throats, colds, and the flu.

- Deodorant and antiperspirant: Applying deodorant or antiperspirant to the armpits can irritate the skin and cause soreness.

- Friction: Certain activities, such as shaving or wearing tight-fitting clothing, can cause friction against the armpits and lead to irritation and soreness.

- Infections: Bacterial or fungal skin infections can also cause soreness in the armpits.

- Muscle strain: A strain to the muscles in the armpit area can cause soreness and discomfort.

- Allergic reactions: An allergic reaction to a product or fabric can cause the armpits to become sore and inflamed.

- Insect bites or stings: Bites or stings from insects, such as mosquitoes or bees, can cause soreness in the armpits.

- Hidradenitis suppurativa: A chronic skin condition that affects the sweat glands, often in the armpits or groin. It can cause painful lumps, swelling, and drainage.

If you experience soreness in your armpit, it is important to determine the cause in order to receive the appropriate treatment. If the soreness persists, it is important to consult with a doctor for further evaluation and management.