These ectoparasites cause local irritation induced by their bites and, therefore, provide an entry for pathogens into the irritated and inflamed integument. If large numbers of these mites are present, they can induce severe blood-loss anaemia. | These ectoparasites cause local irritation induced by their bites and, therefore, provide an entry for pathogens into the irritated and inflamed integument. If large numbers of these mites are present, they can induce severe blood-loss anaemia. |