Skin Disorders & Diseases

Lesion

A mark on the skin that may indicate an injury or damage that changes the structure of tissues or organs

Primary Lesion

Lesions that are a different color than the color of the skin

Bulla

A blistering containing watery fluid

Macula

A flat spot or discoloration on skin

Papule

A small elevation on the skin that contains no fluid but may develop pus

Pustule

Formed from papule when dead white blood cells accumulate in it

Wheal

An itchy, swollen lesion that can be caused by the blow, scratch, bite of an insect, urticaria/skin allergy, or the sting of a nettle

Secondary skin lesions

Characterized by piles of materials on the skin surface, or by depressions in skin surface

Excoriation

Skin sore or abrasion produced by scratching or scraping

Fissure

Crack in skin penetrating into the dermis

Keloid

Thick scar resulting from excessive growth of fibrous tissue

Ulcer

Open lesion on the skin or mucous membrane of the body; accompanied by loss of skin depth and possibly weeping fluid or pus

Comedo

Hair follicle filled with keratin and sebum

Closed comedo

Whitehead

Open comedo

Blackhead

Milia

Keratin-filled cysts that appear just under the epidermis and have no visible opening; benign

Acne

Skin disorder characterized by chronic inflammation of your sebaceous glands from retained secretions

Rosacea

Appears on the cheeks and nose; Can progress to pustular-type breakouts; chronic

Sebhorreic Dermatitis

Skin condition caused by an inflammation of the sebaceous glands; characterized by redness, dry or oily scaling, stubborn dandruff, itching

Anhidrosis

The inability to sweat; caused by autonomic nerves

Bromidrosis

Sweat has an odor; caused by bacteria

Hyperhidrosis

Excessive sweating; caused by body weakness or heat

Conjunctivitis

Caused by bacteria; characterized by red and watery eyes; also called pink eye CONTAGIOUS

Eczema

Inflammatory, uncomfortable, often chronic skin condition characterized by dry, itching, painful skin

Herpes Simplex I

Contagious recurring viral infection that often presents as a fever blister or cold sore, mostly asymptomatic

Impetigo

Contagious bacterial skin infection characterized by weeping lesions; usually caused by staphylococcus bacteria

Psoriasis

Characterized by red patches covered with silver-white scales

Leukoderma

Characterized by light, abnormal patches HYPOPIGMENTATION

Nevus

Small or large malformation of the skin due to abnormal pigmentation; also called birthmark

Stain

Abnormal brow or red skin patches, having a circular or irregular shape

Vitiligo

Hereditary condition that causes HYPOpigmented spots

Keratoma

An acquired superficial (surface) round, thickened patch of epidermis; callus

Basal cell carcinoma

Most common, least severe skin cancer; 90% survival rate when caught and treated early

Squamous cell carcinoma

Characterized by scaly red papules or nodules; survival rate depends on stage at diagnosis

Malignant melanoma

Characterized by black or dark brown patches on skin that may appear uneven in texture, jagged, or raised; 100% fatal if left untreated

Contact dermatitis

An inflammation of the skin caused by having contact with certain chemicals or substances