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Rhus dermatitisL23.7

Author:Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

Dermatitis Rhus dermatitis; (e) Rhus dermatitis; (e) Urushiol-induced contact dermatitis; Toxicodendron dermatitis

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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.

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.

Epicutaneous test.

Differential diagnosisThis section has been translated automatically.

Zoster

Erysipelas

dermatitis bullosa pratensis

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.

  1. Kim Y et al (2019) Poison Ivy, Oak, and Sumac Dermatitis: What Is Known and What Is New? Dermatitis 30:183-190.
  2. Lofgran T et al (2020) Toxicodendron Toxicity. In: StatPearls. Treasure Island (FL): StatPearls Publishing.
  3. Roth L et al (1984) Plant toxins. In: Roth L et al. (Eds)Poisonous plants, plant allergy. Nikol Publishing Company mbH Hamburg S797-798
  4. Signore RJ (2017) Prevention of poison ivy dermatitis with oral homeopathic rhustoxicodendron. Dermatol Online J 23:13030/qt3rm4r9hk.
  5. Tanner TL (2000) Rhus (Toxicodendron) dermatitis. Prim Care 27:493-502.

Authors

Last updated on: 29.10.2020

Author: Prof. Dr. med. Peter Altmeyer