How can you differentiate between scabies aczema and bed bugs?

Scabies vs bed bugs: Scabies looks like lines of burrows on skin made with little mounds or blisters. They cause itching which is often worse at night. Although they can be anywhere on skin they like going into skin folds (waistline, axilla, breasts, between fingers, wrists, knees, legs, elbows, buttocks & genitalia. Bed bug bites may cause no symptoms or signs in some people. When there is a reaction, it may not show.