normal skin and nodule, type of inflammatory acne on white background.

nodule acne pimple nodular nodulocystic skin face inflammatory inflamed clogged pore blister bump red sores lesion spot lump formation comedone propionibacterium acnes sebum hair follicle sebaceous gland dead cell epidermis cross layer surface anatomy bacteria beauty body dermatology facial care infection inflammation vector problem treatment aesthetic compare flat design infographic diagram damage