Kæledyr
Flere planter kan forårsage nældefeber eller hudirritation hos heste:
Brændenælde: Tiny hairs cause a burning, itchy rash.
Giftæble: Contains urushiol, which can cause allergic reactions.
Gift egetræ: Similar to poison ivy and also contains urushiol.
Sumak: Some species can cause allergic reactions in sensitive horses.
Kæmpebjørneklo: Sap can cause severe burns and blisters on contact with skin.