A bite by Pulex irritans, Ctenocephalides felis and Ctenocephalides canis will not only cause excitation and pain, but also allergic reaction of certain degree.

• 人蚤、猫栉首蚤和印鼠客蚤等在刺叮人时不仅产生刺激和引起疼痛，而且刺叮后局部皮肤常出现不同程度的过敏反应。