|Abstract||Recrudence: There has been a recent upturn oi ectoparasitic infections, pediculosis and human scabies. Body lice: Trench lever due to Bartonella quintana infections has been recently reported in socially disadvantaged subjects, with endocarditis in several cases. Treatment of pediculosis: Agents must be effective both against adult lice and nits. Pyrthroid and malathion are the most widely used agents, but resistance has been reported and it is recommended to change to another class oi drugs ii a well-conducted treatment is unsuccessful. Unsual forms of scabies: The incidence oi generalised scaly scabies is increasing, particularly in patients with retroviral infections (HIV, HTLV-I). Atypical bullous forms similar to pseudo- pemphigoid bullae have been described in elder subjects. I Special attention: Relapse of scabies with scalp involvement requires systematic treatment. The efficacy of oral ivermectin is strongly counter-balanced by the associated overmortality.