Dermatitis

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Contents 1 More Specific Terms 2 Introduction 3 Classification 4 Etiology 5 Pathology 6 Clinical-manifestations 7 Differential-diagnosis 8 Management 9 More General Terms 10 Additional Terms 11 References

More Specific Terms

• acrodermatitis
• asteatotic dermatitis (eczema craquelatum, xerotic eczema, winter itch)
• atopic dermatitis (eczema)
• chondrodermatitis nodularis chronica helicis
• contact dermatitis (exogenous eczema)
• dermatomyositis
• diaper rash
• eczema herpeticum
• eczematous (endogenous) dermatitis
• erythoderma (exfoliative dermatitis)
• exfoliative erythroderma
• figurate dermatitis (rings, arcs)
• hand dermatitis
• lichenoid dermatitis
• neurodermatitis
• nummular (discoid) eczema; exudative dermatosis
• papulosquamous dermatitis
• periorbital dermatitis
• pseudofolliculitis barbae
• psoriasiform dermatitis
• radiodermatitis (radiation dermatitis)
• seborrheic dermatitis
• skin maceration
• stasis dermatitis
• vesiculobullous dermatitis

Introduction

• Inflammation of the skin.

Classification

• acute

• macroscopic spongiosis with vesicles & bullae
• examples: contact dermatitis of poison oak or ivy

• subacute

• erythema & crusting, but no vesiculation
• microvesiculation seen on histology

• chronic

• lichenification
• post- inflammatory pigmentary changes

• hyperpigmentation
• hypopigmentation

Etiology

• exogenous ( contact dermatitis)
• endogenous

• dyshidrotic eczema
• stasis dermatitis
• pharmaceuticals

Pathology

• inflammation of the epidermis
• epidermal spongiosis

Clinical-manifestations

• exogenous ( contact dermatitis)

• irregular configuration of lesions
• linear configuration of lesions or sharp angles

• endogenous dermatitis

• rounded borders

Differential-diagnosis

• contact dermatitis
• atopic dermatitis
• asteatotic dermatitis
• lichen simplex chronicus

Management

• topical glucocorticoids

• caution: tachyphylaxis may occur with prolonged treatment of endogenous eczema

• remove/avoid offending agent(s)
• probiotics not useful [4]

More General Terms

• skin disease (dermatologic disorder, dermatopathy, dermatosis)

Additional Terms

• lichenification
• rash
• skin lesion

References

1. Harrison's Principles of Internal Medicine, 13th ed. Companion Handbook, Isselbacher et al (eds), McGraw-Hill Inc. NY, 1995, pg 829-39
2. Medical Knowledge Self Assessment Program (MKSAP) 11, American College of Physicians, Philadelphia 1998
3. Harrison's Principles of Internal Medicine, 14th ed. Fauci et al (eds), McGraw-Hill Inc. NY, 1998, pg 298
4. Boyle RJ et al. Probiotics for treating eczema (Review). Cochrane Database Syst Rev 2008 Oct 8. <PubMed> PMID: [1] <Internet> [2]
5. Dermatitis: NIH Institute and Center Resources [3] Eczema: NIH Institute and Center Resources [4]
6. The National Eczema Society. [5]

dermatitis