That's probably the best answer I've seen posted on this topic. Far too many people act as though it's a real disease, and I suspect it gets used as a scapegoat to cover arachnocultural mistakes.idon't think i have ever seen it. out of maybe 2k tarantulas that have passed my way so far
basically it is gimped motor function or reactions. there are tons of things that can do it. pesticides, obviously. getting scorched... that is a relatively brief spike in temperature that breaks but doesn't kill the bug. i half suspect certain kinds of depressurization or cold shock from shipping air freight styles can do it. i bet there are a ton of pathogens that can do it. kinetic trauma, from fall or other accidents. i bet the right level and style of dehydration could do it. i bet (micro)nutrient deficiencies could do it. i bet defensive compound accumulation could do it. (iirc, most roaches have some kind of chemicals they use as defensive/repugnatorial compounds, for instance). who knows what else. that is just what i could pop off the top of my head