Bites that blister can be caused by more than one type of incident. Insect bites, including ones inflicted by spiders and ticks, can cause this symptom. A person who has been bitten or scratched by a cat or dog may also see a blister on the wound site.
Insect bites can result in a number of symptoms. Some people will see some redness and swelling in the area near the bite. Itching is another common symptom associated with bug bites, and people who have been bitten by mosquitoes are likely to experience this discomfort for a few days following the bite.
A brown recluse spider bite will look different from a mosquito bite. A sign that one of these insects has inflicted a bite is when a purple blister develops at the bite site. If the insect responsible for the wound is a brown recluse spider, a red ring will present around the blister. If at all possible, the spider should be captured so that its identity can be confirmed and appropriate treatment can be offered to the victim so that the cause of the bites can be determined.
Ticks can also cause bites that blister the victim’s skin. People who are spending time out of doors in wooded areas are at risk for being bitten by these small insects. Initial signs of a tick bite include pain and swelling. A blister may appear in the area within a few days following the bite. Swelling and itching may also occur in the bite area, and the skin may appear red for a few days following the bite.
Interacting with four-legged animals can lead to injuries in some cases. If the animal has been infected by the bacteria which cause cat scratch disease, it can cause bites that blister. If a person has merely been scratched by a four-legged animal, it may not be readily apparent that the cat or dog is responsible for the bump which appears on the skin a few days after the initial contact. If the lymph glands near the contact point become swollen, the person may be infected with cat scratch disease.
Bites that blister or present other symptoms which appear to be more than an uncomplicated insect bite should be checked out by a physician. If the blistering or irritation continues to increase in size over time, the patient should be checked out by a doctor. Some people are allergic to insect bites, and anyone who is having difficulty breathing should seek medical attention immediately.