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Itchy welts on the arms can be caused by a variety of factors, including insect bites, hives (urticaria), or skin conditions like eczema or psoriasis.
If the welts are red, raised, and itchy, they could be hives, which are often a reaction to an allergen or other trigger.
Other potential causes include contact dermatitis, folliculitis, or even dermatographism.
Possible Causes:
  • Insect Bites/Stings: Mosquitoes, ants, bees, and other insects can cause localized welts with itching and swelling.
  • Hives (Urticaria): Hives are raised, red, itchy welts that can appear as a result of allergic reactions, infections, or other triggers like stress or temperature changes.
  • Eczema: This chronic skin condition can cause dry, itchy, and inflamed patches of skin, sometimes with raised bumps.
  • Psoriasis: Psoriasis can cause red, scaly, itchy patches on the skin, including the arms.
  • Contact Dermatitis: This occurs when the skin reacts to a substance it's come into contact with, causing a rash, itching, and potentially welts.
  • Folliculitis: Inflammation of hair follicles can cause small, red, itchy bumps.
  • Dermatographism: A condition where scratching the skin causes welts or raised areas.
When to See a Doctor:
  • If the welts are severe, widespread, or accompanied by other symptoms like difficulty breathing or dizziness, seek immediate medical attention .
  • If the itching is intense or persistent, or if the welts don't improve with over-the-counter treatments, consult a doctor .
  • If you suspect a severe allergic reaction, call emergency services immediately .
General Recommendations:
  • Avoid scratching: Scratching can worsen the itching and potentially lead to infection.
  • Apply cool compresses: This can help relieve itching and reduce inflammation.
  • Consider over-the-counter antihistamines: These can help reduce itching and swelling.
  • Identify and avoid triggers: If you can identify what's causing the welts, avoiding those triggers can help prevent future outbreaks.
  • Consult a doctor if needed: For persistent or severe cases, a doctor can help determine the cause and recommend appropriate treatment.
This is for informational purposes only. For medical advice or diagnosis, consult a professional. AI responses may include mistakes. Learn more
Hives are a type of allergic reaction that creates itchy bumps on your skin. What are hives? Hives are raised red bumps (welts) or splotches on the skin.
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Hives — also known as urticaria (ur-tih-KAR-e-uh) — is a skin reaction that causes itchy welts that range in size from small spots to large blotches. Hives can be triggered by many situations and substances, including certain foods and medications. Angioedema can arise with hives or alone.
Oct 27, 2023
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Itchy Welts On Arms from www.webmd.com
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