Redness of the skin where you’ve been bitten by a bedbug is an allergic reaction. They can also resemble a pimple or a mosquito bite but are usually red. There is a center dot that has a darker shade of red, indicating where the bug bit you. The red bump can be single or multiple, forming a line or zigzag pattern.
Redness usually starts within twenty-four hours after getting bit and can last up to three days. Bedbugs typically do not carry infectious diseases, but it is best to seek medical attention if you have more serious symptoms. If the redness has worsened or significantly spread after forty-eight hours, it may be a sign of a serious condition.