Have you noticed small red dots suddenly appearing on your skin? While they might look alarming, most are harmless—but some could signal an underlying health issue. This guide breaks down the 8 most common causes, when to see a doctor, and how to treat them.
Possible Causes of Red Dots on Skin
1. Cherry Angiomas
What they look like: Bright red, round, pinhead-to-pencil-eraser-sized bumps.
Cause: Clusters of dilated capillaries (benign vascular growths).
Who gets them: Common after age 30, often genetic.
Treatment: Usually harmless; can be removed via laser or electrocautery for cosmetic reasons.
2. Petechiae
Appearance: Tiny, flat, pinpoint red/purple spots that don’t fade when pressed.
Causes:
Minor trauma (coughing, vomiting)
Blood clotting disorders
Infections (like strep throat)
Vitamin deficiencies (C, K)
When to worry: If widespread or accompanied by fever/fatigue (could indicate leukemia or sepsis).
3. Heat Rash (Miliaria)
Looks like: Clusters of small red bumps, often itchy.
Cause: Blocked sweat ducts in hot/humid weather.
Fix: Cool the skin, wear breathable fabrics, use calamine lotion.
4. Allergic Reaction
