Red dots on the skin can be alarming, but they’re often harmless. Here are some common causes:
Petechiae – Tiny red or purple dots from broken blood vessels, sometimes caused by coughing, vomiting, or certain medications. Widespread petechiae may signal an underlying condition and should be evaluated by a doctor.
Cherry Angiomas – Small, bright red bumps often seen with age. They’re benign and typically don’t need treatment.
Heat Rash – Itchy red bumps caused by trapped sweat, especially in hot, humid weather. Usually resolves on its own.

Allergic Reactions – Red, itchy spots or hives triggered by allergens like food, meds, or insect bites. Antihistamines can help.
Folliculitis – Pimple-like red bumps from inflamed hair follicles. Mild cases clear up, but more serious ones may need antibiotics.
Cellulitis – Painful, red, swollen skin from a bacterial infection. Requires prompt antibiotic treatment.
Impetigo – Contagious red sores that ooze and crust, common in children. Needs antibiotics.

Vasculitis – Inflammation of blood vessels that may appear as red or purple dots. May require specialized treatment.
Hemangiomas – Bright red birthmarks caused by blood vessel overgrowth. Usually harmless and fade with time.
See a doctor if red dots are: spreading quickly, accompanied by fever or swelling, or paired with fatigue or other symptoms.