Types of plant rashes, example species, and treatments.

Table 2: Types of plant rashes, example species, and treatments.

Rash type	Description	Example species	Treatments
Irritant contact dermatitis	Nonimmune-mediated rash resulting from myriad of mechanical (e.g. spines, thorns, etc.) and chemical irritants.	Spp producing spines, thorns, needles, etc; Diverse spp producing chemical irritants [3]	Avoidance; Gloves and other protective materials; Removal and irrigation; Ice and analgesic medication [10].
Allergic contact dermatitis	Delayed onset (48-72 h) pruritic erythematous rash in distribution of exposure.	Toxicodendron spp; Diverse species [3].	Avoidance; Wash affected area with soap and water; High potency topical corticosteroids; Systemic corticosteroids with taper over 2-3 weeks [7].
Urticarial rash	Pruritic hives (wheals surrounded by blanching erythema) directly after contact with offending foliage in the distribution of exposure.	Urticadioica (stinging nettles); Other urtica spp [3].	Avoidance; Topical antihistamines, calamine lotion, topical corticosteroids [14].
Phytophotodermatitis "lime disease"	Irregular, erythematous or violaceous patches often with blistering arising approximately 24 hours following plant and UV light exposure.	Apiacea (carrot) family, Rutaceae (citrus) family, Moraceae (fig) family, Fabaceae (legume) family [3].	Wash off plant matter prior to UV exposure; Topical corticosteroids can speed recovery; Antihistamines may help with itching/discomfort [6].
Toxidromal rash	Rash accompanied by systemic symptoms (saponin and euphorbiaceae toxidromes). Euphorbia spp may also cause local contact dermatitis.	Soapwort, maple spp, ginseng, euphorbia spp [3].	Contact poison control center if suspected exposure; Inpatient supportive care for sick individuals. Eye exposures should be copiously irrigated and emergently evaluated [3].