More than a temporary cosmetic problem, the infection could gradually worsen and spread across the nail.

Shingles is a burning, blistering rash that affects more than 1 million Americans each year, with risk increasing after age 50.

The immune system mistakenly attacks healthy skin cells, causing them to build up and form thick, scaly patches.

Plantar warts are painful foot lesions caused by a common virus.

Eczema is a chronic skin condition affecting about 10 percent of the U.S. population.

Keloids affect 10 percent of Americans and often run in families.

Emerging research suggests rosacea, a chronic inflammatory condition affecting at least 16 million Americans, is more than just skin-deep.

This fat-soluble antioxidant supports the immune system, keeps blood running smoothly, fights free radicals, and facilitates cell communiciation.

Staph bacteria live harmlessly of 30 percent of Americans but can lead to severe infection for some.