Secure the spider first
Move away from the spider and close or contain it if this can be done without another exposure. Do not continue handling or provoking the animal.
Clean the bite
Wash the bite site with soap and water. Do not cut the wound, suck it or apply unproven chemicals.
Species matters
Bites from many common New World terrestrials are usually associated with local pain, while some Old World genera can produce more severe or systemic symptoms. Keep the scientific name available for medical staff if known.
Poecilotheria and significant symptoms
Poecilotheria bites have documented reports of intense pain and muscle cramping. Significant pain, spreading symptoms, muscle cramping or other systemic effects warrant medical assessment.
Emergency symptoms
Breathing difficulty, collapse, rapidly worsening swelling or other severe systemic symptoms are medical emergencies. Use emergency medical services.
Prevent another bite
Review how contact happened. Handling, fingers inside an occupied enclosure and improvised rehousing are avoidable routes. Use long tools and a catch cup for future maintenance and transfers.