I recently posted about my 10 year old corn snake who suddenly died within 36 hours of eating a rat. It had never come into contact with another snake and did not have mites as far as I could tell- I think if it had them the vet would have seen it under the flurescent light. Still, could my snake have been born with it, harbored it for 10 years, then had it manifest? It strongly resembles the symptoms of how my snake abruptly died.