Synonym(s)
Dermatitis Rhus dermatitis; (e) Rhus dermatitis; (e) Urushiol-induced contact dermatitis; Toxicodendron dermatitis
DefinitionThis section has been translated automatically.
Allergic contact dermatitis on sumac plants, which include Rhus radicans (poison ivy, poison ivy, poison vine), Rhus diversiloba (poison oak), Rhus vernix (poison sumac, poison sumac, etc.) and Rhus quercifolium (poison oak). In the United States, up to 50% of the population is sensitized. The triggering substance is urushiol (CAS No: 53237-59-5), a derivative of pretzel catechol with the molecular formula: C21H32O2.
Occurrence/EpidemiologyThis section has been translated automatically.
North America.
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ManifestationThis section has been translated automatically.
Usually occurring 5 hours to 10 days after contact.
Clinical featuresThis section has been translated automatically.
Itchy erythema, hemp-grain-sized papules, blistering, oozing. Dark red, edematous surroundings. Toxic general symptoms are possible. Duration: 2-6 weeks. Chronic forms with years of pruritus and eczema are possible.
DiagnosisThis section has been translated automatically.
Differential diagnosisThis section has been translated automatically.
External therapyThis section has been translated automatically.
Short-term glucocorticoids such as 0.1% triamcinolone cream R259 or 0.1% mometasone (e.g. Ecural fat cream) once/day.
Internal therapyThis section has been translated automatically.
In severe cases antihistamines such as desloratadine (e.g. Aerius) 5-10 mg/day or levocetirizine (e.g. Xusal) 5-10 mg/day.
LiteratureThis section has been translated automatically.
- Kim Y et al (2019) Poison Ivy, Oak, and Sumac Dermatitis: What Is Known and What Is New? Dermatitis 30:183-190.
- Lofgran T et al (2020) Toxicodendron Toxicity. In: StatPearls. Treasure Island (FL): StatPearls Publishing.
- Roth L et al (1984) Plant toxins. In: Roth L et al. (Eds)Poisonous plants, plant allergy. Nikol Publishing Company mbH Hamburg S797-798
- Signore RJ (2017) Prevention of poison ivy dermatitis with oral homeopathic rhustoxicodendron. Dermatol Online J 23:13030/qt3rm4r9hk.
- Tanner TL (2000) Rhus (Toxicodendron) dermatitis. Prim Care 27:493-502.
Recommended articles
Incoming links (4)
Dermatitis bullosa pratensis; Dermatitis, rhus dermatitis; Hederae folium; Ivy dermatitis;Outgoing links (10)
Antihistamines, systemic; Dermatitis bullosa pratensis; Desloratadine; Epicutaneous test; Erysipelas; Glucocorticosteroids; Levocetirizine; Papel; Triamcinolone acetonide cream hydrophilic 0,025/0,05/0,1% (nrf 11.38.); Zoster;Disclaimer
Please ask your physician for a reliable diagnosis. This website is only meant as a reference.
Prof. Dr. med. Peter Altmeyer