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Doctor insights on: Best Antibiotic For Spider Bite

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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

Dr. John Leander Po
1,117 doctors shared insights

Antibiotic (Definition)

An antibiotic is a medicine that slows, stops, or kills germs. The germs are usually bacteria causing an infection in a person, so the person uses antibiotics to help his body get ...Read more


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What is the best antibiotic to treat an infected spider bite?

What is the best antibiotic to treat an infected spider bite?

Boils: What people call 'spider bites' are rarely spider bites; they're usually abscesses (boils). The cause is usually staph. Aureus, including mrsa. Antibiotics like tmp/smx (bactrim), clindamycin, and Doxycycline can be helpful at the early stage, but by the time a boil has formed, they often have to be opened and drained. ...Read more

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What treatment at home can be done for black widow spider bite? Which antibiotic is best?

What treatment at home can be done for black widow spider bite?  Which antibiotic is best?

Spider Bite: Treatment for serious reactions to a black widow spider's bite will be beyond the scope of most medical offices and urgent care centers. Pain relief may require the use of narcotics and Antivenin (antitoxin to counteract the effects of the spider venom). ...Read more

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Do i need antibiotics for spider bite?

Do i need antibiotics for spider bite?

Spider bite: 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. You may need antibiotics for signs of infection or significant ulceration. ...Read more

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When is an antibiotic needed for a spider bite?

When is an antibiotic needed for a spider bite?

Boil: I've answered many questions about 'spider bites' today. They are rarely spider bites; they're usually bacterial infections of the skin, most often caused by staph aureus. The usually treatments are with Bactrim (sulfamethoxazole and trimethoprim) or clindamycin. However, by the time they've turned into boils, they may need to be opened and drained. ...Read more

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Which is the preferred antibiotic for brown recluse spider bites?

Information: Probably a broad spectrum such as a cephalosporin. Surgery may be needed to remove the bite. Healing can be prolonged. ...Read more

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Do spider bites stop progressing after taking antibiotics?

Do spider bites stop progressing after taking antibiotics?

Only if infected.: Antibiotics should do nothing for a spider bite unless of course it is infected. This is not common, but can happen. I suppose that if you had a spider bite and you took anything and the bite regressed as it was wont to do, you could attribute succes to the ingested agent. ...Read more

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What antibiotic should I take for infected spider bite?

I don't advocate: Self care if the lesion is infected. Please have it medically assessed. ...Read more

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Dr. Put me on antibiotics for my swollen lymphnodes he thinks a spider bite me, how long does it take for my nodes to go down, before im concerned?

Monitoring Centers: Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells and digested food. Lymph nodes "taste" the lymph for anything bad like bacteria/viruses/cancers, etc. When it detects a problem, it alerts the immune system and your body reacts. They enlarge in response to the inflammation they create when they react. They shrink when all is well. ...Read more

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After antibiotic treatment, how long before a spider bite will go away?

Depends: Different spiders cause different reactions. For less toxic spider bite, which are the most common, it usually takes 7-10 days. To decrease pain and swelling, I have found the use of orally administered steroids to lessen pain and swelling. ...Read more

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How long and what are the signs that a spider bite is properly healing? I am in antibiotic for it now. It's still purple and puss

How long and what are the signs that a spider bite is properly healing? I am in antibiotic for it now. It's still purple and puss

Paaaaaaarrrrtyyyyy!!: Purple is not on the list of normal skin colors on this planet and pus is normal only if you are a bunch of bacteria having a party on flesh. That means either you're a party-goer from Pluto or you need to get that seen by a doc ASAP. Here on earth, that purple color may mean trouble, so head for a doctor on the double. Your antibiotic ain't workin'--so them bugs have a head start on the party. ...Read more

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My wife was bitten by some sort of insect. It appears to be a spider bite. Red cellulitis that is spreading, center is open draining. What antibiotic?

My wife was bitten by some sort of insect. It appears to be a spider bite. Red cellulitis that is spreading, center is open draining. What antibiotic?

See your doctor: Skin infections are most commonly caused by S. aureus or "staph." The resistant form is known as MRSA. Antibiotic choice depends on the patient's other medical problems but Cephalexin is a common choice for the non-resistant form and Doxycycline and Linezolid are the most effective oral antibiotics for MRSA. Your provider can culture the wound to tailor antibiotics specifically to the infection. ...Read more

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Small, hard, whitish, plug-like mass came out of recluse spider bite while cleaning before dressing. Left a small hole. Is this bad? Im on antibiotics

Small, hard, whitish, plug-like mass came out of recluse spider bite while cleaning before dressing. Left a small hole. Is this bad? Im on antibiotics

Keep an eye: Most likely this was the soft tissue that died. Cover it with a bandaid and Bacitracin ointment after a shower. Make sure it doesn't get worse as it shouldn't. Good luck from NYC. ...Read more

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Should i start taking antibiotics if i believe I have a spider bite on my foot?

Should i start taking antibiotics if i believe I have a spider bite on my foot?

No: If it just happened, treat with simple wound care including cleansing of the wound, checking tetanus status and watching for signs of progression leading to infection. However, since the foot can become infected very easily, watch for infection very closely. If any doubt, see your doctor. ...Read more

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