What is the difference between the way scabies and bed bug bites look?

Bed bugs vs scabies. Bed bug bites may cause no symptoms or signs in some people. When there is a reaction, it may not show until several days after the bed bug has bitten. It can cause pink, swollen, itchy lesions on the skin. What can be telltale is when there is a linear track of lesions from sequential feedings – but that does not always occur. Scabies looks like lines of burrows on skin made with little mounds or.