Medically reviewed by Casey Gallagher, MD Key Takeaways A yeast infection on the skin can cause a red rash with dry, scaly patches.Yeast infections often appear in skinfolds, under the breasts, and ...

Scabs on the scalp can come from dandruff, acne, or contact dermatitis. Treating scalp conditions might involve medicated shampoos or prescription medications. Avoid products that cause irritation, ...