The reason why red dots appear on the skin can be various, and while some of them go away on their own, some require a suitable treatment.

Some of the most common reasons which lead to the red spots are allergic reactions, acne residual mark, vascular birthmarks, skin spots due to angiomas, protein overproduction, heat rash, insect bites, leaking capillaries, as well as autoimmune conditions.

1. Petechiae and Purpura These are tiny red dots that appear on the skin due to damaged blood vessels or capillaries.

They can be caused by stress, coughing, or certain medications. Although they are usually harmless, they can sometimes indicate underlying platelet disorders.