Semecarpus anacardium (Family: Anacardiaceae). is a frequently used medicinal plant in alternative medicine. There has been few case reports suggesting the role of marking nut extract in allergic contact dermatitis. Case one presented with vesicles coalescing to form bullae with surrounding necrotic epidermis accompanied by itching and burning sensation over nape of neck. https://www.parisnaturalfoodes.shop/product-category/kyolic-formula-104/