Poison Oak, Ivy, Sumac dermatitis: Difference between revisions
No edit summary |
|||
| Line 1: | Line 1: | ||
==Background== | ==Background== | ||
[[File:Poison Ivy in Perrot State Park.jpg|thumb|Poison Ivy]] | [[File:Poison Ivy in Perrot State Park.jpg|thumb|Poison Ivy]] | ||
*Type of [[Contact dermatitis|contact dermatitis]] | |||
*Caused by Urashiols found in the sap of the plant. | *Caused by Urashiols found in the sap of the plant. | ||
Revision as of 01:51, 21 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 |
|
Diagnosis
- Previous exposure leads to sensitization and earlier symptoms
- 1-2 days for previous sensitizations and 10-14 days for first contact
Workup
- Clinical diagnosis
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
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