Infestations, Stings, and Bites

Sep 15, 2018 by in Dermatology Comments Off on Infestations, Stings, and Bites

Numerous arthropods can produce infestations, stings, and bites (see box). In addition to infestations, like scabies, arthropods can produce pruritic bites and local envenomation reactions that can result in tissue…

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Alopecia

Sep 15, 2018 by in Dermatology Comments Off on Alopecia

Alopecia (hair loss) is one of the ten most common causes of skin-related visits to physicians in the United States. Alopecia can be classified as scarring or nonscarring, and, although…

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Nail Disorders

Sep 15, 2018 by in Dermatology Comments Off on Nail Disorders

Key Terms Paronychia Acute paronychia Chronic paronychia Onychomycosis Leukonychia mycotica Onychauxis Thick hyperkeratotic nails Trachyonychia Twenty-nail dystrophy Nail disorders are often encountered as “Oh, by the way…” issues, meaning that…

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Sclerosing and Fibrosing Disorders

Sep 15, 2018 by in Dermatology Comments Off on Sclerosing and Fibrosing Disorders

Key Terms Scleroderma Progressive systemic sclerosis Scleredema Scleredema adultorum Scleredema of Buschke Sclerosing and fibrosing disorders manifest as a hardening or induration of the skin due to the overproduction (fibrosis)…

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Follicular Disorders

Sep 15, 2018 by in Dermatology Comments Off on Follicular Disorders

Follicular disorders represent pathologic processes that alter or otherwise inflame the pilosebaceous (follicular) unit. Alopecias are also follicular disorders but are considered elsewhere in this text. Numerous disorders can affect…

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Purpuric and Hemorrhagic Disorders

Sep 15, 2018 by in Dermatology Comments Off on Purpuric and Hemorrhagic Disorders

Purpuric and hemorrhagic (P&H) disorders may be caused by systemic illness, potentially fatal infections (e.g. meningococcemia), coagulopathies, vascular occlusive disorders (e.g. cryoglobulinemia), and inflammatory disorders of blood vessels (e.g. vasculitis)….

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Atrophic Disorders

Sep 15, 2018 by in Dermatology Comments Off on Atrophic Disorders

Key Terms Striae Stretch marks Striae alba Striae distensae Striae gravidarum Striae rubra Atrophic Disorders Partial Differential Diagnosis • Acrodermatitis chronica atrophicans • Anetoderma • Aging—extrinsic (photoaging) • Aging—intrinsic •…

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Pustular Eruptions, Nonfollicular

Sep 15, 2018 by in Dermatology Comments Off on Pustular Eruptions, Nonfollicular

Key Terms Acrodermatitis continua of Hallopeau Impetigo herpetiformis Pustulosis of the palms and soles Pustules are defined as papular lesions filled with an exudate of acute inflammatory cells. In most…

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Cutaneous Diseases of Travelers

Sep 15, 2018 by in Dermatology Comments Off on Cutaneous Diseases of Travelers

A recent study found that skin disease affects up to 8% of travelers. Skin disease is the third most common problem of travelers, after diarrhea and respiratory disorders. It is…

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Topical Treatment Pearls

Sep 15, 2018 by in Dermatology Comments Off on Topical Treatment Pearls

Introduction Becoming proficient and knowledgeable about skin disease involves the accumulation of experience, but there are certainly pearls that can be shared to expedite the process. For example, even before…

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