C4 Skin Disorders and Diseases

Lesion

Mark on the skin that indicates an injury or damage that changes the structure of tissues or organs

Primary Lesion

Lesions that are different color than the color of the skin

Bulla

Blister containing a watery fluid

Macula

Flat spot or discoloration of the skin

Papule

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

Pustule

Forms from a papule when dead white blood cells accumulate in it

wheal

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

Secondary skin lesions

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

Excorciation

Skin sore or abrasion produced from scratching

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 of fluids or pus

Comedo

A hair follicle filled with keratin and sebum

Open Comedo

Known as a blackhead. sebum has been exposed to the environment

Closed Comedo

Known as a whitehead, when the follicle is closed and not exposed to the environment

Milia

Benign, keratin-filled cysts that appear just under the epidermis and have no visible opening resembling a small sesame seed

Acne

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

Rosacea

A chronic condition that appears on the cheeks and nose. Factors that aggravate are spicy foods, caffeine, alcohol, extreme heat and cold, or sunlight or stress

Sebhorrheic

Characterized by inflammation, dry or oily scaling or crusting/ itchiness

Anhidrosis

The condition can be life-threatening and requires medical attention. The inability to sweat

Bromidrosis

Severe cases require medical attention. Foul smelling perspiration

Hyperhidrosis

Excessive sweating, caused by heat or general body weakness

Conjunctivitis

Known as pinkeye, a common bacterial infection of the eyes

Eczema

Inflammatory, uncomfortable, and often chronic disease of the skin. Characterized by moderate to severe inflammation, scaling, and sometimes even itching

Herpes Simplex

A contagious, recurring viral infection often presents as a fever blister or cold sore, although many people have no symptoms. Blisters appear on the lips, nostrils, or other part of the face, and the sores can last up to three weeks

Impetigo

A contagious bacterial skin infection characterized by weeping lesions and usually caused by a staphylococcus bacteria

Psoriasis

Characterized by red patches covered with silver white scales

Leukoderma

Characterized by light, abnormal patches

Nevus

Small or large malformation of the skin due to abnormal pigmentation

Stain

An abnormal brown or red skin patches, having a circular or irregular shape

Vitiligo

A hereditary condition that causes hypopigmented spots

Keratoma

Callus, acquired, superficial round, thickened patch of epidermis

Basel cell carcinoma

Most common and least severe skin cancer

Squamous cell carcinoma

Characterized by scaly red papules or nodules, survival rates depend on the stage of diagnosis

Malignant Melanoma

Characterized by black or dark brown patches on the skin that may appear uneven in texture, jagged, or raised. survival rate of 66% once it reaches the local lymph nodes

Acne

Main food source is fatty acids

Contact dermatitis

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

Sensitization

An allergic reaction is created by repeated exposure to a chemical or a substance

Verruca

Hypertrophy of the papillae and epidermis