Red spots on the skin have various causes. For example, exposure to irritants can cause dermatitis, fungal infections can cause ringworm, blood vessels can cause spots called purpura, and some autoimmune disorders can cause rashes.
Some spots will go away on their own, but others may require treatment.
This article discusses 13 causes of red spots on the skin, whether it is a cause for concern, and when to seek immediate medical attention.