Upper Arm

Make a muscle: The upper arm is home to our biceps—the Popeye muscle. It’s where we get most of our arm power from and, not to mention, adds a bit of sex appeal.

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An armpit lump, or axillary lump, is often caused by swollen lymph nodes in the armpit. This condition can also be associated with tenderness or pain in the lump under the arm. A small or pea-sized lump in the armpit can also be caused by a skin infection, like a cyst, or ingrown hair. Read below for more causes and treatments options.
The muscle on the front part of your arm—the one you flex to show strength—can tear in an instant. An orthopedist can help figure out whether you can heal with just physical therapy or if you need surgery.
Biceps tendonitis is painful inflammation of the tendon that connects the bicep to the bones of the shoulder, usually due to overuse. Symptoms of biceps tendonitis include a throbbing, aching pain in the shoulder that may radiate down the arm.
Understand your tricep pain symptoms, including 4 causes & common questions.
Understand your bicep pain symptoms with Buoy, including 4 causes and common questions concerning your bicep pain.
Folliculitis causes red itchy or painful bumps. It is an inflammation of the hair follicle and can occur almost anywhere on the body. It can go away on its own or with medication.

Armpit Pain: Causes & How to Treat It

Pain in the armpit can be caused by skin conditions that include infected hair follicles, ingrown hairs, or inflammation from deodorants ot lotions. Sore armpits can also be caused by enlarged lymph nodes or trauma from an injury to the shoulder or upper arm. Other causes for underarm pain can arise from breast pain or nerve damage that can affect the neck and arm.
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What Causes Itchy Armpits?

Itchy underarms is a quite common condition experienced by individuals who may be having an allergic reaction to hygienic products, chemicals, or plants. Infected hair follicles and exposure to scabies might also result in an armpit itch.
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8 Reasons for Your Painful Arm Bump & How to Treat It

A painful bump on the arm can be caused by accidentally hitting it against a hard object, like a wall or door. You may not even remember doing it. Or it can be from a skin condition like boils, cysts, warts, or an abscess. Less common reasons include lipoma and melanoma.
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What Causes Numbness on One Upper Arm & What to Do Next

Numbness in the upper area of one arm can be caused by an injury, a compressed nerve, or muscle overuse. Other causes of numbness and tingling in the upper arm include a pinched nerves within the neck or a mini stroke. Figure out what is causing it and how to get relief.
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