Published on: 6/18/2025
What underlying conditions could cause right arm swelling?
Right arm swelling can be caused by several underlying conditions, including blood clots, infections, lymphedema, injuries, or circulation problems. A medical evaluation can help identify the exact cause.
Explanation
Swelling in the right arm may result from a variety of health issues, some minor and others more serious. Possible underlying causes include:
Deep vein thrombosis (DVT): A blood clot in the arm can cause sudden swelling, pain, and discoloration. Lymphedema: This occurs when lymph fluid builds up due to damage or removal of lymph nodes, often after cancer treatment. Infections: Cellulitis or other infections can cause redness, warmth, pain, and swelling in the arm. Injury or overuse: Muscle strains, sprains, or fractures can lead to localized swelling. Venous insufficiency: Poor blood flow in the veins can cause fluid buildup. Allergic reactions: A reaction to a bite, sting, or substance can lead to swelling in the affected area. Tumors or growths: Rarely, a mass pressing on blood vessels or lymphatic structures can block drainage and cause swelling.
If swelling is sudden, painful, or comes with other symptoms like fever, shortness of breath, or skin changes, seek medical attention promptly.
(References)
- Ciocon JO, & Galindo-Ciocon D. (1998). Arm edema, subclavian thrombosis, and pacemakers. Angiology, 9555935.
- Davis R, Reed E, & Kraus C. (2020). Arm Pain and Swelling in a College Swimmer. The Journal of the American Osteopathic Association, 31930395.
- Zakaria A, Gill J, Nishi LM, Nadwodny J, & Pujalte GGA. (2020). Soccer player with unusual right shoulder and arm pain .... Journal of primary health care, 32594986.
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