Link to Problems for Discussion
For a spider bite to be regarded as a definite bite (by a particular type of spider), all of the following must occur:
Discomfort or pain always occurs with spider bites; their absence goes against the diagnosis. Other important local effects include:
Over 80% of bites are caused by 6 major families of spiders:
The majority of cases of bites involving these spiders result in local pain alone. Systemic effects are rare and mild.