Phytophotodermatitis: Difference between revisions
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Revision as of 10:12, 8 July 2016
Background
- The result of chemicals in certain foods reacting with sunlight to cause an aggrevated "sun-burn" like rash
Common Causative Agents
- Celery
- Parsnip
- Fennel
- Lime
- Carrot
- Mustard
- Parley
- Dill
- Grapefruit
- Lemon
- Fig
- St. John's wort
Clinical Features
- Bizzarre, linear streaking rash that can be painful or burning
- Bullae and vesicles
- Often in a "dripping" pattern or with hand-prints
- Acute phase 3-5 days, may then progress to hyperpigmentation for months
Differential Diagnosis
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
Diagnosis
- Clinical diagnosis
Management
- Topical steroids (e.g. topical triamcinolone)
Disposition
- Outpatient