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Doctor insights on: Staph Sore That Looks Like A Spider Bite

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Dr. Neal Kraus
521 doctors shared insights

Staphylococcal Infection (Definition)

Staphylococcal infection is a bacterial infection that can cause disease in many parts of the body. Staph infections ...Read more


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I have a sore on my right leg and it hurts. My mom says it looks like a spider bite. It is white around the center and red around the white. Help?

I have a sore on my right leg and it hurts. My mom says it looks like a spider bite. It is white around the center and red around the white. Help?

Bite?: Could be a spider bite and it should resolve in about 7-10 days (get better day by day). Your description could also be a boil. Is it raised and dies it appear to get larger day by day? Boils are skin abscesses. I would get it checked by your pcp to remove any doubt. Both are easily treated. ...Read more

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Husband, Lucius has asthma. He has large sore on leg. Looks like spider bite. He's using inhaler 3 to 4 times a day. Not sure what to do.

Husband, Lucius has asthma.  He has large sore on leg. Looks like spider bite. He's using inhaler 3 to 4 times a day. Not sure what to do.

See a doctor: If the sore is not healing and/ or is draining or painful a doctor visit is needed. The inhaler use has no connection to the sore. ...Read more

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My son has a pimple like sore on the back of his arm resembles a spider bite looks like it has a yellow kind of puss inside and it very hard?

My son has a pimple like sore on the back of his arm resembles a spider bite looks like it has a yellow kind of puss inside and it very hard?

Abscess: It may have started out as a bite but it know sounds like infection or an abscess and should be drained and likely treated with antibiotics. All the best. ...Read more

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May this be a brown recluse spider bite. Started out looking like a boil then it went down. The place then got real red, painfull and puss came out now it is red swollen and looks and feels like the tissue around it is kinda ruff and tender at the same t

May this be a brown  recluse spider bite. Started out looking like a boil then it went down. The place then got real red, painfull and puss came out now it is red swollen and looks and feels like the tissue around it is kinda ruff and tender at the same t

I : I can't diagnose your lesion. You indicated that you thought you saw a fang puncture mark. The brown recluse is actually quite small. It can be a quarter of an inch to a little over half an inch, so I am not sure that it would leave an obvious fang mark. I was bitten by a brown recluse about 3 decades ago. The bite was painless. A black eschar (scab) quickly formed and the skin around it was white and died quickly. My arm became markedly swollen, hot and red and i developed a high fever and muscular skeletal aches throughout my body. I lost a lot of tissue (skin and deeper tissue) from the site. It took over a week to get rid of my generalized symptoms and several months for my arm to heal in the area that i was bitten. I became quite ill from it. Luckily, most people do not have this severe a reaction. Brown recluse bites can cause minor reactions or they can in rare cases be deadly. Hemotoxic venom is injected when they bite. In one study, over a third of bites led to necrosis (destruction) of the skin surrounding it. A systemic illness occurred in about 14 % of cases. However, the majority of people have no significant reaction to their bite. I don't know if you have a boil or if it is a venoous bite or sting. Spider bites sometimes leave a black scab in the center (called an eschar) and there may lighter, or sloughing skin around that. If you develop fever, vomiting or a significant amount of skin is sloughing, the area of redness is continuing to grow larger and painful it would be appropriate to have it checked out by a medical provider. Take care. I hope it heals quickly. ...Read more

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I have a slightly large pimple like sore on my back. It's not itchy but it is painful. Could it be from a spider bite?

I have a slightly large pimple like sore on my back. It's not itchy but it is painful.  Could it be from a spider bite?

Unlikely: Most common lesion on the back as you described is a pimple or sebaceous cyst. Both of which are localized skin infections/inflammations. A spider bite could occur on back but is less likely. A spider bite could get infected or it could cause tissue necrosis as with the brown recluse spider bites. Best to have a doc look at it. ...Read more

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Sore jaw from spider bite, what to do?

Sore jaw from spider bite, what to do?

See a doc: If you are having symptoms of jaw pain from a spider bite, please follow with a physician for evaluation and management. ...Read more

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How can I tell if a sore on my arm is a pimple or a spider bite?

How can I tell if a sore on my arm is a pimple or a spider bite?

Dots: A spider bite usually has several dots in the red area. Also, the spider injects venom which causes a much larger area of redness and induration(roughness). ...Read more

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