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Doctor insights on: Best Antibiotic For Spider Bite

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Dr. Martin Raff
Board Certified, Infectious Disease
51 years in practice
103M people helped
1

1
Best antibiotic for a spider bite infection that was not treated with dicloxicillin?

Dr. Martin Raff
Board Certified, Infectious Disease
51 years in practice
103M people helped
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 or Doxycycline or sometimes clindamycin. Dicloxacillin is unlikely to be effective. ...Read more

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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. John Leander Po
1,118 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


Dr. Joel Gallant
Board Certified, Infectious Disease
31 years in practice
10M people helped
2

2
What is the best antibiotic to treat an infected spider bite?

Dr. Joel Gallant
Board Certified, Infectious Disease
31 years in practice
10M people helped
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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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. Michael Fisher
Board Certified, Dermatology
27 years in practice
31M people helped
3

3
What treatment at home can be done for black widow spider bite? Which antibiotic is best?

Dr. Michael Fisher
Board Certified, Dermatology
27 years in practice
31M people helped
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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Dr. Heidi Fowler
Board Certified, Psychiatry
20 years in practice
532M people helped
4

4
Do i need antibiotics for spider bite?

Dr. Heidi Fowler
Board Certified, Psychiatry
20 years in practice
532M people helped
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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Dr. Bennett Machanic
Board Certified
47 years in practice
50M people helped
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Dr. Joel Gallant
Board Certified, Infectious Disease
31 years in practice
10M people helped
5

5
When is an antibiotic needed for a spider bite?

Dr. Joel Gallant
Board Certified, Infectious Disease
31 years in practice
10M people helped
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 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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Dr. Denis Winder
Board Certified, Plastic Surgery
53 years in practice
379K people helped
6

6
Which is the preferred antibiotic for brown recluse spider bites?

Dr. Denis Winder
Board Certified, Plastic Surgery
53 years in practice
379K people helped

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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Dr. Dan Fisher
Board Certified, Internal Medicine
22 years in practice
78M people helped
7

7
Do spider bites stop progressing after taking antibiotics?

Dr. Dan Fisher
Board Certified, Internal Medicine
22 years in practice
78M people helped
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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Dr. Heidi Fowler
Board Certified, Psychiatry
20 years in practice
532M people helped
8

8
What antibiotic should I take for infected spider bite?

Dr. Heidi Fowler
Board Certified, Psychiatry
20 years in practice
532M people helped

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

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Dr. Michael Miller
Board Certified, Wound care
31 years in practice
3M people helped
9

9
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?

Dr. Michael Miller
Board Certified, Wound care
31 years in practice
3M people helped

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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Dr. Jason Forbes
Board Certified, Wound care
11 years in practice
50K people helped
10

10
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?

Dr. Jason Forbes
Board Certified, Wound care
11 years in practice
50K people helped
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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Spider Bites (Definition)

Spider bites can often cause redness, pain and inflammation at the site of a bite. Most spider bites are actually from other bugs. Abscess formation is often ...Read more


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Dr. Bennett Machanic
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47 years in practice
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