symptoms of seborrhea. seborrhea skin and hair. dandruff, seborrheic dermatitis. baldness, hair growth, baldness

allergy alopecia anatomy anti beauty care closeup dandruff derma dermatitis dermatology disease dry eczema epidermis flake fungus hair head health healthy human illness illustration inflammation inflammatory itch itchiness loss medical medication medicine problem psoriasis scalp scaly sebaceous seborrhea seborrheic sebum secretion sickness skin treatment vector