Hello Dear. Rashes can occur due to infections of the skin, disseminated infections (that have spread throughout the body), allergic reactions, or irritations of the skin. Red spots on the skin that occur singly can be a small benign tumor of blood vessels, known as a hemangioma. Tiny, pinpoint hemorrhages can be seen in the skin and are referred to as petechiae. Bleeding disorders can also lead to the formation of purplish red spots that are larger, known as purpura. Rashes can be associated with other symptoms, such as hives or itching. Red spots on the skin that are related to underlying medical conditions will be associated with symptoms of the underlying condition. If rashes are associated with fever it can be measles or rubella. Kindly consult a doctor who may do blood tests to diagnose the condition. Hope i have answered your question. Feel free to contact me if you have any more questions. I ll be glad to help you. All the best With warm regards Dr Sanjay Kini