Red dots on the skin have many causes—some harmless, others needing medical care. Common reasons include “allergic reactions, acne scars, insect bites, heat rash, and vascular birthmarks.” Cherry angiomas, small raised bumps from blood vessel overgrowth, often appear with age.

Petechiae and purpura are tiny red spots from bleeding under the skin. They are “often harmless but can signal platelet problems or other health issues.” Heat rash happens when sweat is trapped under the skin, causing itchy red spots.

Infections like folliculitis or cellulitis, and skin conditions such as impetigo—a contagious bacterial infection—can also be responsible. More serious causes include autoimmune conditions and vasculitis (inflammation of blood vessels).

For mild cases, home remedies may help. “Aloe vera gel soothes irritation, coconut oil moisturizes and reduces inflammation, and dandelion root tea may support skin health.” But if spots worsen, spread, or change in appearance, see a doctor.

Good hygiene, avoiding skin irritants, and eating a balanced diet can help maintain healthy, resilient skin. Early diagnosis is key to proper treatment.