A flea bite can cause insect bite dermatitis, which is a well-defined papule, maculopapular rash, papular rash, or pemphigus-like blister or pemphigus-like papule on the flea contacted skin area. After scratching, local oozing, rupture and crusting may occur. Clinical treatment requires oral administration of anti-allergy medications, such as levocetirizine hydrochloride tablets, and topical application of Denide cream.