Some common features of spider bites are as follows:
Other possible symptoms that may occur include the following:
- Pruritis (itching)
- Rashes or blisters
- Severe pain at the bite site
- Swelling at the sight of bite
- Breathing difficulty
- Nausea and vomiting
- Increased blood pressure
- Anaphylactic reaction that may turn fatal (Rare)
This spider is shiny and black with a red hourglass-shaped mark on its stomach.
The bite marks appear as two puncture marks on the skin.
Some systemic signs and symptoms of the bite are as follows:
- Pain and burning at the bite site
- Muscle cramps
- Elevated blood pressure
- Increased salivating and sweating
- Nausea and vomiting
In some people, a bite by a black widow can make you very sick, and hence, it needs immediate medical attention.
Bite of a hobo spider may go unnoticed initially, but pain and numbness usually develop after around 15 minutes. It progresses to turn red and eventually becomes hard and swollen after around eight hours. There may be oozing from the wound, and it eventually turns black.
Other systemic signs and symptoms may include the following:
Other systemic symptoms are as follows:
Brazilian wandering spider
The bite of Brazilian wandering spiders is extremely painful. There is swelling, redness, warmth, and pain around the bite site. It can lead to tissue death, profuse sweating, and drooling of saliva. Emergency treatment with antivenom is required.
Wolf spiders are around 3-4 inch long and look similar to tarantulas. Their bite can tear the skin and cause pain, redness, and swelling. It can take up to 10 days for it to heal.
You may also experience swelling around the bite wound and mild-to-intense bleeding.
They are small, about half an inch, and hairy. The most common type is black with white spots. Its bite feels similar to a wasp sting. An allergic reaction to the spider venom can occur. Symptoms include the following:
Are spider bites dangerous?
There are over 3,000 different types of spiders in North America. The bites of most of the spiders are not dangerous. Their bites may appear red with itching and usually heal in around a week on their own.
The spiders that manage to bite through our skin and insert toxic venom can cause serious health complications. Immediate medical attention is required if there are systemic signs and symptoms, or if the bites turn into sores.
How are spider bites treated?
In most cases, nonvenomous spider bites may heal on their own or with simple home remedies such as:
- Cleaning the area with soap and clean water
- Applying an ice pack on and off over the affected area for 10-15 minutes at a time
- Elevating the area to reduce swelling
- Taking an over-the-counter antihistamine (for itching) and painkillers
- Cleaning the wound with an antiseptic
- Applying antibiotic ointment to the affected area
Immediate medical attention is required if there are systemic signs and symptoms or if the bite does not heal or become worse. Bites by one of the following species require emergency medical treatment:
- Brown recluse
- Black widow
- Hobo spider
- Brazilian wandering spider
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