Cactus Granulomas of the Skin

Cactus‐induced keratoconjunctivitis in Texas: A case series of three dogs and one cat

“…Protracted urticaria, intense discomfort, and pruritis are features of a human occupational hazard known as sabra dermatitis, a condition reported in people who frequently handle cacti of the Opuntia genus. This condition is associated with a granulomatous hypersensitivity reaction to residual glochids, and clinical signs have been reported to persist for several months in affected humans . A similar hypersensitivity to residual glochids may have caused granuloma formation, persistent irritation, and may have influenced the delayed healing observed in case 2.…”

“…This condition is associated with a granulomatous hypersensitivity reaction to residual glochids, and clinical signs have been reported to persist for several months in affected humans. 4,5,[25][26][27][28] A similar hypersensitivity to residual glochids may have caused granuloma formation, persistent irritation, and may have influenced the delayed healing observed in case 2. This observation reinforces the recommendation to pursue aggressive surgical extraction of conjunctival glochids early in the course of disease in a controlled surgical setting (ie, operating microscope and inhalant general anesthesia) as a means of potentially avoiding this complication.…”

Plant Dermatitis

“…Based on the plant taxonomy developed by the Swedish botanist, Linn é , Latin names describe families (capitalized, plural, no italic), genus (capitalized, italic, singular), and species (italic, singular). 4 Other sources of skin lesions following exposure to plants include pseudophytodermatitis (e.g., contact with arthropods or insecticides on the plant) and pseudophytophotodermatitis (e.g., contact with phototoxic chemicals from fungal infections in the plant). Based on the mechanism of action, phytodermatitis is divided in the following classifi cations: (1) irritant contact dermatitis, (2) allergic contact and airborne allergic dermatitis, (3) phytophotodermatitis, (4) pharmacological injury, and (5) mechanical injury.…”

Plants and Plant Products that Induce Contact Dermatitis

“…) and Opuntia cochinillifera (Cactaceae), known as prickly pears, has been termed sabra dermatitis [4]. This condition is caused by the penetration of the skin by glochidia, the small barbed bristles present in the areoles of the cacti [4,5].…”