how is scabies caused
Causes of scabies. Scabies is a skin condition caused by the parasite Sarcoptes scabiei. The intense itching associated with scabies is thought to be caused by the immune system reacting to the mites and their saliva, eggs and faeces.auses of scabies. Scabies is a skin condition caused by the parasite Sarcoptes scabiei. The intense itching associated with scabies is thought to be caused by the immune system reacting to the mites and their saliva, eggs and faeces.