sentences:  A dermatologist is a specialist doctor who manages diseases related to skin, hair and nails and some cosmetic problems.Attested in English in 1819, the word "dermatology" derives from the Greek δέρματος ("dermatos"), genitive of δέρμα ("derma"), "skin" (itself from δέρω "dero", "to flay") and -λογία "-logia".In 1801 the first great school of dermatology became a reality at the famous Hôpital Saint-Louis in Paris, and the first textbooks (Willan's, 1798–1808) and atlases (Alibert's, 1806–1814) appeared in print around the same time.