Yeast is a fungus normally found inside your body and on your skin. When too much yeast grows, it can cause an infection. Antifungal creams or medicines taken by mouth are used to treat it.

Yellow fever is a viral disease caused by the bite of a mosquito. It is found mainly in certain areas of Africa, Central America, and South America.

Yoga means "union"—a union of the mind, body, and spirit—and uses slow movement, precise posture, meditation, and breathing exercises to reach a state of relaxation.

Detailed information on growth and development of children

Chemotherapy can affect both the skin and nails. It may cause an increased sensitivity to the sun as well as redness, rashes, itching, peeling, dryness, or acne. Nails may become darkened, yellow, brittle, or cracked, and may also develop vertical lines or ridges.