1) Medical specialist 2) Skin doctor 3) Specialist 1) Skindoctor 
• (n.) One who discourses on the skin and its diseases; one versed in dermatology.
A doctor who has special training to diagnose and treat skin problems.
<specialist> A specialist expert in the treatment of disorders of the skin. ... (27 Sep 1997) ... 
(dur″mә-tol´o-jist) a specialist in dermatology.
A doctor who is also a specialist in treating illnesses of the skin, hair and nails.
Der`ma·tol'o·gist noun One who discourses on the skin and its diseases; one versed in dermatology. 
Type: Term Pronunciation: der-mă-tol′ŏ-jist Definitions: 1. A physician who specializes in the diagnosis and treatment of cutaneous diseases and related systemic diseases.
Dermatologist: A doctor who specializes in the diagnosis and treatment of skin problems.
A doctor that specializes in the care and treatment of the skin. Because of the effects that pregnancy may have on the skin, many women find it necessary to see a dermatologist during their pregnancy.
[n] - a doctor who specializes in the physiology and pathology of the skin
A doctor who specialises in skin conditions.
skin doctor noun a doctor who specializes in the physiology and pathology of the skin
A dermatologist is a doctor that specialises in treating all kinds of skin disorders and diseases including the ones that are related to hair. A dermatologist can help you make the right decision on how to manage hair loss and the method to achieve the best results.
dermatólogo
A doctor that specialises in skin and scalp conditions.
a specialist in dermatology, esp. a doctor who specializes in the treatment of diseases of the skin.
a doctor who specializes in the physiology of the skin