Ch. 4 skin disorders and diseases

Characterized by an accumulation of material on the skin surface, such as a crust or scab.

• Primary lesions

• Secondary lesions

• Lesions

• Tubercle

Lesions that are different in color than the surrounding skin and can be flat/ or raised above the skin's surface.

• Primary lesion

• Lesion

• Secondary lesion

• Scale

Open skin lesion or mucous membrane of the body, accompanied by loss of skin depth and possibly weeping of fluids.

• Keloid

• Tissue

• Scab

• Ulcer

A hair follicle filled with keratin and sebum.

• Closed comedo

• Cyst

• Open comedo

• Papule

A bump just under the skin surface that appears when the follicle is not exposed to the environment.

• Pustule

• Open comedo

• Acne

• Closed comedo

A chronic condition that appears on the cheeks and nose.

• Bulla

• Rosacea

• Scale

• Fissure

It is a chronic skin disease characterized by moderate to severe inflammation, scaling and sometimes severe itching.

• Eczema

• Crust

• Milia

• Dermatitis

A contagious bacterial skin infection characterized by weeping lesions.

• Impetigo

• Herpes simplex 1

• Acne

• Albinism

A skin disease characterized by red patches covered with silver-white scales.

• Mole

• Acne

• Psoriasis

• Keratoma

An acquired superficial thickened patch of epidermis. a callus caused by repeated pressure or friction.

• Mole

• Verruca

• Keratoma

• Dermatitis