What would cause of a patch red painless dots?

There are many potential causes for a rash of red, painless dots. Some of the most common causes include:

* Insect bites or stings: Insect bites and stings can cause red, itchy bumps to appear on the skin. These bumps are usually small and round, and they may have a white center.

* Hives: Hives are a type of skin reaction that can cause red, itchy welts to appear on the body. Hives can be caused by a variety of things, including allergies, infections, and certain medications.

* Eczema: Eczema is a chronic skin condition that can cause red, dry, itchy patches of skin to appear. Eczema can be triggered by a variety of factors, including environmental allergens, stress, and certain foods.

* Psoriasis: Psoriasis is a chronic skin condition that causes red, scaly patches of skin to appear. Psoriasis can be triggered by a variety of factors, including stress, infection, and certain medications.

* Ringworm: Ringworm is a fungal infection that can cause red, itchy, circular patches of skin to appear. Ringworm can be spread through contact with an infected person or animal, or through contact with contaminated objects.

* Scarlet fever: Scarlet fever is a bacterial infection that can cause a rash of red, sandpaper-like bumps to appear on the body. Scarlet fever is also accompanied by a fever, sore throat, and swollen lymph nodes.

If you are experiencing a rash of red, painless dots, it is important to see a doctor to determine the cause. The doctor may perform a physical exam and order blood tests or skin tests to help diagnose the condition. Once the cause of the rash has been determined, the doctor will recommend the best course of treatment.