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Doctor insights on: Spider Bite Infection Symptoms

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How do I tell if it's a spider bite or some kind of infection?

How do I tell if it's a spider bite or some kind of infection?

Sometimes difficult: These are sometimes difficult to tell apart and sometimes bites can become infected. Bites may have a central puncture wound although with all the redness and inflammation it can be hard to see. It may be felt rather than seen. ...Read more

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Dr. Ira Katz
9 doctors shared insights

Infection (Definition)

Infections are invasions of some other organism (fungus, bacteria, parasite) or viruses into places where they do not belong. For instance, we have normal gut bacteria that live within us without causing problems; however, when those penetrate the bowel wall and enter the bloodstream, ...Read more


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Spider bites that cause a infection ?

Yes they can: Any bite to the skin can get secondarily infected. Best not to scratch the bite and use a topical antibiotic for a few days. See your doctor if the bite is getting more red, swollen, and painful. ...Read more

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What to do with a spider bite to prevent infection?

Clean wound: Use simple soap and water. There is nothing better than this. ...Read more

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How can you tell the difference between a mosquito or spider bite infection vs a tick bite infection?

Limited space: Though spider, tick or mosquito bites can sometimes cause infection, the vast majority of them will not. A limited local inflammatory response can be expected from any of these. Symptoms exceeding this should be examined by a physician. 'spider bites' have become a common er complaint over the last several years, when in fact most of these are skin abscesses. ...Read more

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Best antibiotic for a spider bite infection that was not treated with dicloxicillin?

Best antibiotic for a spider bite infection that was not treated with dicloxicillin?

Unlikely: To have been a spider bite. Most of these (unless you have actually seen and identified the spider as a black widow or brown recluse), are community acquired infection with methicillin-resistant staph aureus (mrsa). Many of these are sensitive to Bactrim (sulfamethoxazole and trimethoprim) or Doxycycline or sometimes clindamycin. Dicloxacillin is unlikely to be effective. ...Read more