Poison Oak, Ivy, Sumac dermatitis: Difference between revisions
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== | ==Clinical Features== | ||
[[File:PoisonIvyOakSumac.jpeg|thumbnail|Urushiol induced rash]] | [[File:PoisonIvyOakSumac.jpeg|thumbnail|Urushiol induced rash]] | ||
[[File:Urushiol induced contact dermatitis.jpg|thumb|Urushiol induced contact dermatitis]] | [[File:Urushiol induced contact dermatitis.jpg|thumb|Urushiol induced contact dermatitis]] | ||
*Previous exposure leads to sensitization and earlier symptoms | *Previous exposure leads to sensitization and earlier symptoms | ||
**1-2 days for previous sensitizations and 10-14 days for first contact | **1-2 days for previous sensitizations and 10-14 days for first contact | ||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
{{Generalized rash DDX}} | {{Generalized rash DDX}} | ||
==Diagnosis== | |||
*Clinical diagnosis | |||
==Treatment== | ==Treatment== | ||
| Line 55: | Line 55: | ||
*[[Contact dermatitis]] | *[[Contact dermatitis]] | ||
== | ==Video== | ||
{{#widget:YouTube|id=eqz9QsoqjTc}} | |||
==References== | |||
[[Category:Tox]] | [[Category:Tox]] | ||
Revision as of 17:40, 31 October 2015
Background
- Type of contact dermatitis
- Caused by Urashiols found in the sap of the plant.
| Plant | Distribution | Charateristics |
| Ivy | East of the Rockies |
|
| Oak | West of the Rockies |
|
| Sumac | Southeast swamps |
|
Clinical Features
- Previous exposure leads to sensitization and earlier symptoms
- 1-2 days for previous sensitizations and 10-14 days for first contact
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
Diagnosis
- Clinical diagnosis
Treatment
Prexposure Prophylaxis
- Ivy Shield, Stokogard, Organoclay, IvyBlock
Postexposure Prophylaxis
- Technu Poison Cleanser- may solubilize bound resin several hours post exposure
- Dr Wests Ivy Detox Cleanser chelates urushiol- decreases itching even if have rash
Symptomatic Treatment
- if small can use topical Temovate 0.05%
- topical anesthetic- menthol or pramoxine
- single IM dose of Triamcinolone or Prednisone taper over 15-20 days
- 60mg x 4d then 50mg x 4d then 40 30 20....Use oral steroid for 3wks until skin turns over
- systemic antihistamines
- cooling soothing baths
- Pentoxifylline- blocks formation of TNF alpha- suppresses allergic patch testing
- Put sunscreen first, then prexposure ivy cream, then mosquito repellant
See Also
Video
{{#widget:YouTube|id=eqz9QsoqjTc}}