What Are Those Red Dots on Your Skin? Causes and When to Worry

Red dots on the skin are quite common and can come from many causes. Here’s a simplified breakdown of what might be behind them:

  • Petechiae and Purpura: These are tiny red or purple dots caused by broken blood vessels under the skin. They may result from stress, certain medications, or platelet disorders.
  • Cherry Angiomas: Bright red, raised spots that are usually harmless and often appear with age.
  • Heat Rash: Happens when sweat gets trapped in skin pores, leading to small, itchy red bumps—especially in hot or humid weather.
  • Allergic Reactions: Red, itchy dots may appear from reactions to food, medications, or insect bites.
  • Folliculitis: This is inflammation of hair follicles, often from a bacterial or fungal infection. It can cause small, red, sometimes pus-filled bumps.
  • Cellulitis: A deeper skin infection caused by bacteria. It can cause redness, swelling, and pain and needs prompt treatment with antibiotics.
    • Impetigo: A contagious skin infection, mostly in kids, that starts with red sores that ooze and form a yellow-brown crust.
    • Vasculitis: Inflammation of blood vessels, sometimes related to autoimmune diseases. It can lead to red or purple spots on the skin.
    • Hemangiomas: These are benign (non-cancerous) growths made up of blood vessels—usually appear as red or purple birthmarks.

    When to see a doctor: If the red dots are painful, spreading, oozing, or come with symptoms like fever or fatigue, it’s best to get them checked out. Better safe than sorry!

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