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  1. 16 Possible Reasons Why Your Armpit Is Hurting - Verywell Health

    Dec 14, 2025 · Find out how factors like infections and autoimmune diseases can lead to armpit pain. Learn when it's a concern and how to address it effectively.

  2. Axilla (Armpit) Anatomy - Cleveland Clinic

    Sep 29, 2025 · The axilla is the area located between your chest and upper arm. It’s also called an armpit or underarm. It contains blood vessels, nerves and lymph nodes.

  3. Armpit Pain: 9 Common Causes And When To See A Doctor - TODAY

    Dec 27, 2024 · From muscle strains, bacterial and viral infections, and skin rashes, here are 9 possible causes of armpit pain and when to see a doctor.

  4. Axilla - Wikipedia

    The axilla (pl.: axillae or axillas; also known as the armpit, underarm or oxter) is the area on the human body directly under the shoulder joint.

  5. Swollen lymph nodes in armpit: Symptoms, causes, and treatment

    Mar 27, 2025 · Swollen lymph nodes can have various causes, including infection. See pictures and learn about the possible causes of swollen lymph nodes in the armpit.

  6. Armpit Pain: Causes, Diagnosis, Treatment, and More - WebMD

    Jul 21, 2024 · There are many causes of armpit pain, from a mild muscle strain to more serious conditions like breast cancer. Learn more about causes of armpit pain in this article.

  7. Armpit (Human Anatomy): Picture, Function, Parts, Conditions

    Apr 8, 2023 · It's a pyramidal space that can be found between the upper part of the arm and the side of the chest wall. This space is bounded in front and behind by axillary folds. The lymph nodes, axillary …

  8. Pain Under Left Armpit Female: Causes and Remedies Explained - Greatist

    Aug 6, 2024 · There are many possible causes of unexplained armpit pain, ranging in severity from simple muscle strain to, in rare cases, breast cancer. Read on to find out about some of the issues …

  9. Armpit Anatomy: What Muscles Are Hiding Under There?

    Jun 25, 2025 · The armpit, also known as the axilla, is a pyramid-shaped area located between the shoulder girdle and thorax. It contains several muscles, including the serratus anterior, pectoralis …

  10. 4 Reasons You Have Armpit Pain | Buoy Health

    Nov 15, 2024 · Armpit pain may stem from irritation, muscle strain, swollen lymph nodes, or even heart-related issues. Learn causes, symptoms, and when to seek care.