Although their bite can cause irritation and even infection, bedbugs do not carry or transmit the diseases. Bedbug bites can become itchy and may leave the red bumps and marks. Bedbug bites may appear similar to many other insect bites.
However, unlike those of other insects, bedbug bites appear in tight lines of manifold, small, red marks. Bedbugs are not social insects, so groups of bites are most likely the result of a specimen continuing to feed upon its victim. Some bites leave large wheals, although these marks are not classically an indication of a serious problem and will fade to small, red marks within a few days.
Bedbug bites can cause the itchiness. Firstly, a victim may detect a slight burning sensation. The burning area then develops red bumps, known as wheals or papules. In the extreme cases, bites may swell dramatically or turn into blister-like skin inflammations. However, many bites leave no mark and go totally unnoticed.