Call a doctor if:
- You have a rash that develops quickly and looks like bruises or tiny purple or red blood spots under the skin. You may have a serious illness.
- You have a rash with signs of infection. These may include increased pain, redness, swelling, or warmth; red streaks leading from the rash; pus; and fever.
- You get a rash after being bitten by a tick.
- You get a rash after you start a new medicine.
- You have a rash with fever and joint pain.
- A rash occurs with a sore throat.
- You are not sure what's causing a rash.
- A rash does not clear up after 2 to 3 weeks of home treatment.
- A mole is itchy, tender, or painful.
- A mole starts to get bigger or changes color or shape.
- A mole scales, oozes, or bleeds, or its color spreads into surrounding skin.
- You notice a new bump or nodule on a mole or any change in how the mole looks.
- You have a sore that does not heal.
- You have any irritated or unusual skin growth.
If your moles do not change over time, there is little reason to worry about them. If you have a family history of malignant melanoma, let your doctor know. You may be at greater risk.