Psoriasis is a skin disease that occurs when the life cycle of rough and dead cells is accelerated. The excess skin cells form red spots and scales that are itchy and sometimes painful.
A dermatologist is a doctor who specializes in diseases of the skin, hair, nails and mucous membranes.
The rheumatologist is the doctor who specializes in the diagnosis and treatment of diseases that affect the joints, muscles, tendons and bones.
A doctor or family doctor is responsible for diagnosing and prescribing medical treatments to patients. The family doctor refers to patients where a specialist when a specific treatment is required.
Remember that for the proper selection of health professional that treats psoriasis you must consider the nature, severity and symptoms you are presenting.