There are over 34,000 species of spider worldwide (except Antarctica). Almost all are fanged and venomous; however, fewer than 0.5% are able to bite through human skin and, of these, only a handful are considered dangerous. Most spiders are shy and not naturally aggressive, with most bites occurring when the spider is provoked or trapped. In the UK the chance of a significant spider bite is very low; however, risk can increase with:
This is a companion discussion topic for the original article at https://patient.info/doctor/spider-bites