[30F] With red, inflamed bump on arm

Patient Description

A 30-year-old female presents with a red and inflamed bump on her arm, larger than a pencil eraser, which appeared suddenly and has changed over the past 1 1/2 weeks. The patient has applied cream to the area without significant improvement. There are no additional symptoms, recent injuries, insect bites, or new skin products used. The patient reports no recent health or lifestyle changes, environmental exposures, or travel. She has no known allergies and is currently taking Adderall 20 mg XR and Zoloft 150 mg, both once daily.

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Arora's Assessment

What might be happening

Based on the information you've provided, here are some possible explanations for the red and inflamed bump on your arm:

  • Insect Bite or Sting: Even though you don't recall an insect bite, it's possible that a bite or sting occurred without you noticing. These can cause localized redness, swelling, and inflammation.

    • Treatment typically involves cleaning the area, applying a cold compress, and using over-the-counter anti-itch creams or antihistamines to reduce swelling and discomfort.

  • Folliculitis: This is an inflammation of the hair follicles, often caused by bacteria or fungi. It can appear as red, inflamed bumps on the skin.

    • Treatment may include keeping the area clean and dry, using antibacterial or antifungal creams, and avoiding tight clothing that can irritate the area.

  • Contact Dermatitis: This occurs when the skin reacts to an irritant or allergen. Even if you haven't used new products, sometimes reactions can develop to products you've used before.

    • Treatment involves identifying and avoiding the irritant, and using topical corticosteroids to reduce inflammation.

  • Cyst or Abscess: A cyst is a closed pocket of tissue that can be filled with fluid or pus, while an abscess is a collection of pus that has built up within the tissue. Both can cause redness and swelling.

    • Treatment may require medical evaluation to determine if drainage or antibiotics are necessary.

What you can do

While it's important to consult a healthcare professional for a formal diagnosis, here are some steps you can take in the meantime:

  1. Keep the Area Clean: Gently wash the area with mild soap and water to prevent infection.
  2. Apply a Cold Compress: This can help reduce swelling and discomfort.
  3. Use Over-the-Counter Creams: Anti-itch creams or hydrocortisone cream may help alleviate symptoms.
  4. Avoid Scratching: Scratching can worsen the inflammation and increase the risk of infection.
  5. Monitor the Bump: Keep track of any changes in size, color, or pain. You can use MDandMe to journal your symptoms, track progress, and share this information with your healthcare provider.

What you should look out for

Seek medical attention if you notice any of the following:

  • The bump becomes increasingly painful or swollen.
  • You develop a fever or feel unwell.
  • There is pus or other drainage from the bump.
  • Red streaks appear around the bump, which could indicate a spreading infection.

Remember, while I can provide information and suggestions, it's important to consult a healthcare professional for a proper diagnosis and treatment plan.

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20 d ago

People Also Ask

What could cause a sudden red and inflamed bump on the skin?

A sudden red and inflamed bump on the skin could be caused by an insect bite, folliculitis, contact dermatitis, or a cyst/abscess. Each condition has distinct characteristics, and a healthcare professional can provide a proper diagnosis.

How can I differentiate between a cyst and an abscess?

A cyst is a closed pocket of tissue that can be filled with fluid or pus, while an abscess is a collection of pus that has built up within the tissue. An abscess is typically more painful and may require drainage, whereas a cyst might not be painful unless infected.

What are some home remedies for reducing inflammation and discomfort from skin bumps?

Home remedies for reducing inflammation and discomfort from skin bumps include keeping the area clean, applying a cold compress, using over-the-counter anti-itch or hydrocortisone creams, and avoiding scratching the area.

When should I seek medical attention for a skin bump?

You should seek medical attention if the bump becomes increasingly painful or swollen, if you develop a fever or feel unwell, if there is pus or other drainage, or if red streaks appear around the bump, as these could indicate a spreading infection.

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