Thu Jun 30, 2011 12:03 pm
Wasn't there but sounds to me like a darn spider bite, especially the way it's acting, some very ugly spiders out there.
If it was, I wouldn't wait to go get it looked at, Brown Recluse is a real nasty one and pretty common. Not very aggressive.
Darn thing kinda acts like a rattlesnake, takes a few days to really get going.
GT
As suggested by its specific epithet reclusa ("recluse"), brown recluses are rarely aggressive, and actual bites from the species are rare. (In 2001, more than 2,000 brown recluse spiders were removed from a heavily infested home in Kansas, yet the four residents who had lived there for years were never harmed by the spiders, despite many encounters with them.[11]) The spider usually bites only when pressed against the skin, such as when tangled up within clothes, towels, bedding, inside work gloves, etc. Many human victims of brown recluse bites report having been bitten after putting on clothes that had not recently been worn or lying undisturbed on the floor.
The initial brown recluse bite frequently is not felt and may not be immediately painful, yet such a bite can be serious. However, the fangs of the brown recluse are so tiny they are unable to penetrate most fabric, including socks.[12]
The brown recluse bears a potentially deadly hemotoxic venom. Most bites are minor with no necrosis. However, a small number of clinically-diagnosed brown recluse bites do produce severe dermonecrotic lesions (i.e., necrosis); an even smaller number of clinically-diagnosed brown recluse bites produce severe cutaneous (skin) or viscerocutaneous (systemic) symptoms. In one study of clinically-diagnosed brown recluse bites, the incidence of skin necrosis was 37% and the incidence of systemic illness was 14%.[13] In these instances the bites produced a range of symptoms common to many members of the Loxosceles genus known as loxoscelism, which may be cutaneous (skin) and viscerocutaneous (systemic).
Most brown recluse spiders' bites do not result in necrosis, let alone systemic effects. When both types of loxoscelism do result, systemic effects may occur before necrosis, as the venom spreads throughout the body in minutes. Debilitated patients, the elderly, and children may be more susceptible to systemic loxoscelism. The systemic symptoms that are most commonly experienced as the result of a brown recluse bite include nausea, vomiting, fever, rashes, and muscle and joint pain. Rarely, such bites can result in hemolysis, thrombocytopenia, disseminated intravascular coagulation, organ damage, and even death.[14] Most fatalities are children under the age of seven[15] or those with a weaker-than-normal immune system.
While it is important to note that the majority of brown recluse spider bites do not result in any symptoms, cutaneous symptoms occur as a result of such bites more frequently than systemic symptoms. In such instances, the bite forms a necrotizing ulcer that destroys soft tissue and may take months to heal, leaving deep scars. These bites usually become painful and itchy within 2 to 8 hours, pain and other local effects worsen 12 to 36 hours after the bite, and the necrosis develops over the next few days.[16] Over time, the wound may grow to as large as 25 cm (10 inches) in extreme cases. The damaged tissue becomes gangrenous and eventually sloughs away.
[edit]Validity of necrosis claims
It is estimated that 80% of reported brown recluse bites may be misdiagnosed. The misdiagnosis of a wound as a brown recluse bite could delay proper treatment of serious diseases.[3] There is now an ELISA-based test for brown recluse venom that can determine whether a wound is a brown recluse bite, although it is not commercially available and not in routine clinical use; clinical diagnoses often use Occam's razor principle in diagnosing bites based on what spiders the patient likely encountered and what previous diagnoses are similar.[3][13][17]