Scabies epidemics are cyclic and recurring; a new epidemic begins every 30 years (15 years after the conclusion of the prior epidemic). The most recent cycle began in 1993. Scabies is found worldwide, though it is endemic in the tropics. The parasite is indiscriminate - scabies affects people of all races, ethnicities, socioeconomic levels, and geographical locations. The only notable exception is that in the United States, scabies prevalence among African Americans is lower relative to the remainder of the population. Norwegian(Crusted) scabies is becoming ever more prevalent with society's increasing use of immunosuppressive medications and the escalating HIV/AIDS pandemic. To date, over 200 cases of Norwegian scabies have been reported.
Parasite Prevalence: There are an estimated 300 million cases of scabies occur worldwide every year Two oval scabies eggs and several scybala (feces).
Scabies burrow. There is a cluster of eggs in the bottom right corner Characteristic scabies burrow on the side of the foot.