Bed bug bites often appear in zig-zag lines or clusters of three or more bites, and may take up to 14 days to appear. Scratching them can lead to secondary skin infections, which may require ...
Medically reviewed by Susan Bard, MD Hives are red, raised bumps that stem from allergies, infections, or stress.Flea and chigger bites look like small, red, pimple-like bumps and feel very ...