However, they thrive and overgrow in warm, damp places, so this type of infection commonly appears under the arms. Yeast infections cause an itchy, bright red rash, possibly with oozing patches.

Pityriasis rosea is an inflammatory skin condition that produces a red rash. On darker skin tones, this inflammation may appear dark red, purple, or dark brown. Its exact cause is unknown ...

This rash can measure 2 centimeters (cm) to 5 cm in width and is typically slightly raised, scaly, and discolored. A herald patch usually develops on the chest, thighs, upper arms, or neck.

The initial symptoms include: burning itching redness bumps Some sun rashes cause small red dots, which are 2 to 5 mm in size. Rashes can appear differently on different skin tones. For example ...