What are the potential triggers for arm swelling?

Common triggers for arm swelling include:

Injury or trauma: Sprains, fractures, or muscle strains can cause swelling. Infections: Skin infections like cellulitis lead to swelling, redness, and warmth. Blood clots (deep vein thrombosis): Clots block blood flow and cause swelling. Allergic reactions: Bites, stings, or exposure to allergens can cause swelling. Lymphedema: Blockage of lymphatic drainage, often after surgery or radiation. Poor circulation: Venous insufficiency or heart, kidney, or liver conditions can cause fluid buildup. Medications: Some drugs may cause fluid retention and swelling.

If swelling appears suddenly, worsens, or is accompanied by other symptoms like pain, redness, or fever, seek medical care.