[3] One out of nine recorded cases of being bitten by a Blue Mountains funnel-web spider has resulted in severe symptoms of envenomation.

The bite can be successfully treated with the antivenom for the related Sydney funnel-web spider (Atrax robustus).

Despite the venom lacking the atraxotoxin or atraxin of A. robustus, the symptoms are very similar to those from a Sydney funnel-web spider bite.

Features of envenomation include diaphoresis, local pain at the bite site, pulmonary oedema, hypertension, nausea and vomiting.

Versutoxin, a neurotoxin very similar to robustoxin produced by the Sydney funnel-web spider, induces an autonomic storm in the victim.