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How do I tell the difference between bed bug bites and spider bites?

3 doctors weighed in
Dr. Jack Mutnick
Internal Medicine - Allergy & Immunology
1 doctor agrees

In brief: Insect bites

Bed bug bites will be multiple and all over your body whereas a spider bite is usually a single bite with a much larger initial puncture site and significant redness and swelling above and beyond a bed bug bite.

In brief: Insect bites

Bed bug bites will be multiple and all over your body whereas a spider bite is usually a single bite with a much larger initial puncture site and significant redness and swelling above and beyond a bed bug bite.
Dr. Jack Mutnick
Dr. Jack Mutnick
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Dr. Heidi Fowler
Psychiatry

In brief: Bed bug bites may

Cause no sx's/signs in some except for 2 small points where skin was punctured by bedbug.
When there's a reaction, it may show from an hour to several days after bite. It can cause itchy, pink, swollen, lesions w clear center. In cases of hypersensitivity blisters may develop. A telltale sign is linear track of lesions from sequential feedings – but that doesn't always occur. Bites are usually >.

In brief: Bed bug bites may

Cause no sx's/signs in some except for 2 small points where skin was punctured by bedbug.
When there's a reaction, it may show from an hour to several days after bite. It can cause itchy, pink, swollen, lesions w clear center. In cases of hypersensitivity blisters may develop. A telltale sign is linear track of lesions from sequential feedings – but that doesn't always occur. Bites are usually >.
Dr. Heidi Fowler
Dr. Heidi Fowler
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1 comment
Dr. Heidi Fowler
usually in areas that are exposed while sleeping-arms, shoulders,neck & legs. Spider bites can have variable appearances. It might cause a pink or red bump with no symptoms. Or it could itch or be painful. Venomous spiders may cause significant pain radiating far from the site, cramping, sweating, necrosis of tissue or worse if there is an allergic reaction.
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