types of skin pigment discoloration on white background.

skin melanin hyperpigmentation melasma hypopigmentation eczema atopic dermatitis psoriasis depigmentation vitiligo albinism disorders melanocyte types problem discoloration lighten darken lose pigment pigmentation patches damage face scar spots melanogenesis freckle blemish vector flat design infographic cartoon birthmarks blisters wound sun exposure genetic hormone autoimmune change color tone symptom beauty woman cell dermatology inflammatory