Medical dermatology is a field of medicine in which doctors diagnose, assess, and treat health conditions affecting the skin, hair, and nails. Dermatologists are trained to treat patients of all ages, from newborns to the elderly. Conditions common among children are moles and birthmarks, dermatitis, acne, warts, vitiligo, insect bites, and birth defects. In adults, we treat a range of conditions such as cancers and pre-cancers, rosacea, psoriasis, and shingles. We also treat eczema, skin allergies, and other disorders that occur in all age groups, and carefully examine moles or other growths to determine whether they are or may become cancerous.