Therefore, spider identification can be crucial when you need to be able to apply the right treatment without any further delay. Spiders that live outdoors are more difficult to identify due to the large number of species both harmful and venomous. All in all, spider identification serves not only to the scientist but to the average person who either takes a great interest in the various spider species or who'd like to avoid risky exposures and eventual bites. Contact a health care provider immediately if you've been bitten by a spider and you experience fever, nausea, swelling of the tissues and severe pain. The severity of spider bites is determined according not only to the species to which the aggressor belongs, but to the amount of venom that is injected by the spider. Webs are the distinct mark of spiders but even these have a particular imprint of their own: thus, some create sheet webs, others spiral webs, not to mention the true mazes that some dangerous species design as deadly traps for their prey. A clear example here is the distinct tangled web the black widow makes; yet, spiders also create webs for the protection of their nests. Nevertheless, there is one other element that clearly makes the recognition of the brown recluse spider possible. One identification method used by scientists consists in checking how many pairs of eyes the species has; the brown recluse spider has only three pairs of eyes, unlike most other spiders that have four. Hence, do not hesitate to do so in case you experience any of the above symptoms! Many of the ointments prescribed for the alleviation of the pain caused by a spider bite are often ineffectual. Reactions to spider venom vary from one person to another, and the same rule stays valid for the treatment, which is why a remedy that has worked for a person is not necessarily going to be the perfect choice for another. The bites of these spiders are not dangerous, though sometimes nasty symptoms may appear: itching, swelling and even pain are among the most frequently encountered. In the majority of cases medical assistance is not necessary and a bag of ice placed on the bite will do. If discomfort does not cease, you should not postpone seeing a doctor.