The American Academy of Dermatology provides information about the care of skin, hair, and nails. You can locate a dermatologist in your area by using their "Find a Dermatologist" tool at www.aad.org/find-a-derm.

This website is sponsored by the Nemours Foundation. It has a wide range of information about children's health, from allergies and diseases to normal growth and development (birth to adolescence). This website offers separate areas for kids, teens, and parents, each providing age-appropriate information that the child or parent can understand. You can sign up to get weekly emails about your area of interest.

The National Alopecia Areata Foundation (NAAF) funds research and research workshops that promote knowledge about alopecia areata, its causes, and treatments. The NAAF provides local support and education for people who have alopecia areata and for their families and also acts as an advocate for people who have alopecia areata.

The National Institute of Allergy and Infectious Diseases conducts research and provides consumer information on infectious and immune-system-related diseases.