They appear as either raised or indented welts.
However, the welts from bed bugs will be considerably larger than bites from other insects.
Skin rashes or hives can range from measles-like rashes to itchy welts.
Since the bras are primarily designed for weddings, comfort is crucial and customer testimonials rave that this is the only such bra they've found that does the job without leaving welts.
White welts - Some victims develop hard white welts rather than the more common red bumps.