Skin Infestation Skin Infections Scabies Scabies is caused by infestation by Sarcoptes Scabies The bug digs tunnels under the skin The rash is usually red bumps, knots or lines The rash causes intense itching that is worse at night Commonly affected skin locations include: Interdigital web space Wrists Ankles Breasts Around the umbilicus Genitals Immunosuppressed …