Family Medicine 16: 68-year-old male with skin lesion

Family Medicine 16: 68-year-old male with skin lesion

Learning Objectives

The student should be able to:

Describe skin lesions with accuracy.

Define terms that describe the morphology, shape, and pattern of skin lesions.

Formulate the treatment principles of topical corticosteroid and local and systemic antifungal agents.

Apply the ABCDE criteria for the evaluation of hyperpigmented lesions as possible melanoma.

Describe common biopsy procedures, including shave biopsy, punch biopsy, and incisional and excisional biopsies.

Discuss the treatment modalities for squamous cell carcinoma.

Describe the importance and methods of prevention of skin cancers.

Develop initial workup and management of benign prostatic hyperplasia.

Knowledge

Primary and Secondary Skin Lesions

Primary skin lesions are uncomplicated lesions that represent initial pathologic change, uninfluenced by secondary alterations such as infection, trauma, or therapy.

Secondary skin lesions are changes that occur as consequences of progression of the disease, scratching, or infection of the primary lesions.

Primary Skin Lesions

Macule: A macule is a change in the color of the skin. It is flat, and if you were to close your eyes and run your fingers over the surface of a purely macular lesion, you could not detect it. It is less than 1 cm in diameter. Some authors use 5 mm for size criterion. Sometimes “macule” is used for flat lesion of any size.

Patch: A patch is a macule greater than 1 cm in diameter.

Papule: A papule is a solid raised lesion that has distinct borders and is less than 1 cm in diameter.

Plaque: A plaque is a solid, raised, flat-topped lesion greater than 1 cm in diameter. It is analogous to the geological formation, the plateau.

Nodule: A nodule is a raised solid lesion and may be in the epidermis, dermis or subcutaneous tissue.

Tumor: A tumor is a solid mass of the skin or subcutaneous tissue; it is larger than a nodule.

Vesicle: A vesicle is a raised lesion less than 1 cm in diameter and is filled with clear fluid.

Bulla: A bulla is a circumscribed fluid filled lesion that is greater than 1 cm in diameter.

Pustule: A pustule is a circumscribed elevated lesion that contains pus.

Wheal: A wheal is an area of elevated edema in the upper epidermis.

Complete list of primary and secondary skin lesions with images.

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Degree of alignment: MCDONALDS (FASTFOOD)

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