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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.

All articles in Upper Arm

Painful lumps are usually a sign of swollen lymph nodes, an ingrown hair, or a cyst. Usually, it’ll go away on its own. If it doesn't or if the bump becomes infected, call your doctor.

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 flu and other infections can make your muscles feel weak, but true muscle weakness can be a sign of nerve damage, a stroke, or muscle degeneration. Here are 7 reasons you might have upper arm weakness.

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.

See Folliculitis treatments

Bumps on the upper arms are usually caused by common conditions such as skin cysts or pimples, though it's important to talk to your doctor to identify the cause and get the right treatment. Read more below to learn 9 possible causes of bumps on the upper arm.

Understand your loss of armpit/pubic hair symptoms, including 4 causes and common questions.

Irritation around your armpit can be due to a pesky ingrown hair. But when it’s a sign of an enlarged lymph node, it could be a symptom for multiple conditions.

Understand your bicep pain symptoms with Buoy, including 4 causes and common questions concerning your bicep pain.

If your upper arms itch, odds are you have dry skin or eczema. But itching may also be a sign of an allergic reaction, infection, or inflammatory condition. Here’s how to figure out what’s going on and get the treatment you need.

A bruised upper arm can be painful and restrict your range of motion. The bruise is often purple or yellow, and often just needs time to heal. But sometimes there is an underlying cause.

Injuries or trauma to your upper arm can cause sudden and serious pain in your triceps, biceps, or shoulder.

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.

See Biceps Tendon Rupture treatments

Your armpits can become inflamed due to a variety of reasons, including body washes or deodorants. Most rashes can resolve with at-home care, but more serious rashes or redness may need a doctor’s evaluation.

Your triceps is a large muscle in your upper arm that connects at the elbow joint. It is vulnerable to overuse injuries from sports, and may hurt because of injuries to nearby tendons.

Most of the time, itchy underarms are from something simple--deodorant you’re allergic to, soap that irritates your skin, or infected hair follicles. But it could also be a sign of a yeast or fungal infection.

A painful lump on your arm can be a boil, cyst, or inflammation of the skin—or as serious as a skin cancer.

Are you experiencing a painless lump under your armpit? Read more below to learn 9 possible causes, questions your doctor may ask, and more.

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.

See Biceps Tendonitis treatments

Bumps in the armpit can be painful, oozing, and or itchy. Infections such as boils, abscesses or folliculitis are often painful. They may resolve on their own but often require medical evaluation for drainage and/or antibiotics.

Found an intriguing armpit lump on yourself? Let’s get to the bottom of what may have caused the appearance of this abnormal mass.

Numbness and tingling in one arm can be as harmless as your arm falling asleep. But it may signal something more serious, such as a stroke.

Muscle weakness in your arms can have a number of causes, ranging from common conditions like a pinched nerve in the neck, to rarer conditions such as brachial plexopathy (shoulder nerve issue). Read more below to learn what may be making your arms feel weak.