Primary Lesions
Large blister containing watery fluid; similar to a vesicle, but larger
Bulla
Dead cells form over a wound or blemish while it is healing, resulting in an accumulation of sebum and pus, sometimes mixed with epidermal material; an example is the scab on a sore
Crust
Pink or flesh-colored precancerous lesions that feel sharp or rough; resulting from sun damage
Actinic Keratosis
Primary lesion - raised, inflamed papule with a white or yellow center containing pus in the top of the lesion referred to as the head of the pimple
Pustule
chronic inflammatory skin disorder of the sebaceous glands that is characterized by comedones and blemishes
Acne
Closed, abnormally developed sac containing fluid, infection, or other matter above or below the skin
Cyst and Tubercle
skin sore or abrasion produced by scratching or scraping
Excoriation
pigmented nevus; a brownish spot ranging in color from tan to bluish black. Some are flat, resembling freckles; others are raised and darker
Mole
Primary lesion - large nodule; an abnormal cell mass resulting from excessive cell multiplication and varying in size, shape, and color
Tumor
Red and inflamed; many comedones, papules, and pustules
Grade 3 Acne
Flat spot or discoloration on the skin, such as a freckle. Macules are neither raised nor sunken
Macule
crack in the skin that penetrates the dermis. Chapped lips or hands are fissures
Fissure
most common and the least severe type of skin cancer, which often appears as light, pearly nodules; characteristics include sores, reddish patches, or a smooth growth with an elevated border
Basal Cell Carcinoma
Primary lesion - small blister or sac containing clear fluid. Poison ivy and poison oak produce vesicles
Vesicle
Minor breakouts, mostly open comedones, some closed comedones, and a few papules
Grade 1 Acne
these are often referred to as tumors, but these are smaller bumps caused by conditions such as scar tissue, fatty deposits, or infections
Nodule
thick scar resulting from excessive growth of fibrous tissue (collagen)
Keloid
type of skin cancer more serious than basal cell carcinoma; characterized by scaly, red or pink papules or nodules; also appear as open sores or crusty areas; can grow and spread in the body
Squamous Cell Carcinoma
Primary lesion- itchy, swollen lesion caused by a blow, insect bite, skin allergy reaction, or stings.
Wheal
Many closed comedones, more open comedones, and occasional papules and pustules
Grade 2 Acne
pimple; small elevation on the skin that contains no fluid but may develop pus
Papule
open lesion on the skin or mucous membrane of the body, accompanied by pus and loss of skin depth. A deep erosion; a depression in the skin, normally due to infection or cancer
Ulcer
most serious form of skin cancer as it can spread quickly (metastasize). Black or dark patches on the skin are usually uneven in texture, jagged, or raised. Melanomas may have surface crust or bleed
Malignant Melanoma
Secondary Lesion - flaky skin cells; any thin plate of epidermal flakes, dry or oily. An example is abnormal or excessive dandruff
Scale
Cystic acne; cysts with comedones, papules, pustules, and inflammation; scar formation from tissue damage is common
Grade 4 Acne