'The two types of venomous spiders that are really of medical concern are black widow spiders and brown recluse spiders,' Gangloff-Kaufmann explains.īlack widow and brown recluse spider bites can cause more severe symptoms and, in rare cases, death, the Centers for Disease Control and Prevention say. The bites that experts really worry about are those from a few species of venomous spiders. If you're bit by one of these, the most you'll get is a lump and some itching for a few days. Some larger species, like wolf spiders and fishing spiders, tend to be a little more aggressive if provoked and can bite people, she says. 'The truth is that most spiders are too small to bite us, including those adorable jumping spiders,' Jody Gangloff-Kaufmann, Ph.D., an urban entomologist and coordinator with the New York State Integrated Pest Management community program at Cornell University, tells. The less good news is that some spider bites can cause severe symptoms - and require speedy medical attention. The good news is that most spiders can't do much damage to humans. Is that red, itchy bump actually a spider bite? If you didn't see the spider, it can be hard to tell.

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