Girlfriend Injecting Meth Has Open Soars On All Body .sore

Girlfriend injecting meth has open soars on all body .sore burning wont quit picking .our niece brought bed bugs in home so she thinks thats her problem .i know better iv gotten bit but nuthing like her wounds elerjic to penicilin they gave her steroids & antibiotics .its real bad going to doc in morning . She thinks black bugs are burrowing and surfaceing .since takeing meds ?????