Contact dermatitis happens when a substance touches ... though it can also occur on the face, chest, and around the ears. It often causes scaly patches, skin discoloration, and dandruff.

Contact dermatitis comes in two forms ... the condition causes "pink scaly areas, usually on the chest and back," Elbuluk says. "But in darker-skinned people, it can actually cause lightening ...

Atopic dermatitis is one of the most common types of eczema. Signs may include inflamed skin, rash, itchiness and excessive dryness. It may also include bumps and swollen skin that may ooze. It ...