General approach to rashes: Difference between revisions
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==Differential Diagnosis== | ==Differential Diagnosis== | ||
{{Generalized rash DDX}} | {{Generalized rash DDX}} | ||
{{Bullous rashes DDX}} | |||
==Visual Diagnosis== | |||
{{General rashes images}} | {{General rashes images}} | ||
{{Bullous rashes images}} | |||
{{Bullous rashes | |||
==See Also== | ==See Also== |
Revision as of 02:29, 18 March 2016
Background
Dermatology Nomenclature
Small lesions (<0.5cm)
Name | Raised/Palpable | Fluid-Filled | Other Description | Diagram |
Macule | No | None | flat, cirumscribed, colored | |
Papule | Yes | None | Solid | |
Vesicle | Yes | Clear | ||
Pustule | Yes | Pus | Leukocytes or keratin |
Large lesions (>0.5cm)
Name | Raised/Palpable | Fluid-Filled | Other Description | Diagram |
Patch | No | None | Large macule (flat, colored) | |
Plaque | Yes | None | Superficially raised, circumscribed solid area | |
Nodule | Yes | None | Distinct large papule | |
Bulla | Yes | Clear | Large vesicle/blister or exposed epidermal layer | |
Wheal | Yes | Edema | Firm and edema of dermis |
Other
- Eschar
- Fissure/erosion/ulcer
- Necrotizing rashes
Differential Diagnosis
Other Rash
- Acute generalized exanthematous pustulosis
- Allergic reaction
- Aphthous stomatitis
- Atopic dermatitis
- Coxsackie
- Dermatitis herpetiformis
- Exfoliative erythroderma
- Impetigo
- Pellagra
- Pityriasis rosea
- Serum Sickness
- Tinea capitus
- Tinea corporis
- Vitiligo
Vesiculobullous rashes
Febrile
- Diffuse distribution
- Varicella (chickenpox)
- Smallpox
- Monkeypox
- Disseminated gonococcal disease
- DIC
- Purpural fulminans
- Localized distribution
Afebrile
- Diffuse distribution
- Bullous pemphigoid
- Drug-Induced bullous disorders
- Pemphigus vulgaris
- Phytophotodermatitis
- Erythema multiforme major
- Bullous impetigo
- Localized distribution
- Contact dermatitis
- Herpes zoster (shingles)
- Dyshidrotic eczema
- Burn
- Dermatitis herpetiformis
- Erythema multiforme minor
- Poison Oak, Ivy, Sumac dermatitis
- Bullosis diabeticorum
- Bullous impetigo
- Folliculitis
Visual Diagnosis
Other Rash visual diagnosis
Psoriasis before and after treatment.
Vesiculobullous rashes visual diagnosis
Bullous impetigo (after the bulla have broken)
Poison ivy/Oak/Sumac
Poison ivy/Oak/Sumac