Do Spider Bites Blister?

Another common reaction to many spider bites is to get "weeping" blisters at the site (they look puffy and fluid-filled). Small blisters on their own, with no other symptoms, don't necessarily need special care, but if a blister opens, it becomes at risk for infection, says Arnold.

Should I pop a spider bite blister?

Blisters can appear during a flare-up of symptoms, which stress or a rise in temperature can trigger. These small blisters usually clear up in 2–3 weeks. They may burst on their own, but people should avoid popping them.

How long do spider bite blisters last?

Symptoms can last 1 to 3 days.