Pain under the armpit may be due to a number of issues including injury, strain, inflammation and infection or a type of a referred pain, where the cause originates in another part of the body. It may be mild to severe and may be associated with other symptoms such as a rash, bumps or lumps, tenderness, redness or swelling, muscle weakness, reduced mobility and pain in the upper extremities.
Very serious associated symptoms that require immediate medical attention include:
- Severe bone trauma; bones that stick out of the skin.
- Chest pain, tightness, pressure or palpitations
- Respiratory and breathing problems, shortness of breath, labored breathing, wheezing or choking.
- Sudden, stabbing pain.
- Heavy bleeding or hemorrhaging.
There are many causes of underarm pain that have varying degrees of severity:
- Trauma: bone fractures, sprains, lacerations.
- Strain: pulled muscles, overuse injuries and sports injuries.
- Nerve entrapment or compression.
- Deep vein thrombosis.
- Growths: cysts, tumors.
- Infections: the cold, influenza, abscesses, cellulitis.
- Chronic disease: fibromyalgia.
- Allergic reactions.
Minor under arm pain will usually clear up on its own and can be managed with home care. Consult your doctor if your symptoms become persistent or worsen. They can assess your problems, make a diagnosis and recommend a course of treatment.