<prompt> Maculae cerulea seen in:Pediculosis humanis corporisPediculosis capitisPthisis pubisLupus erythematosus  <response>: Pthisis pubis pubic lice - Seen on pubic hair Initial symptom - Itching Blue grey macules - the maculae cerulae Sexually transmitted infection. Diagnosis - Establishing the lice seen as yellow brown specks clinging closely to the base of hair. Rx-shaving of pubic hair Permethrin 2 application Treatment of contact 