<prompt> The circle of hebra represents the main sites of involvement inBlister beettle dermatitisPediculosis corporisScabiesToxoplasmosis  <response>: Circle of Hebra: Imaginary circle intersecting sites of predilection in Scabies ie; Areolae, axillae, elbow flexures, wrists, finger webs, umbilicus, lower abdomen, genitalia. Ref Harrison 20th edition pg 1244 