It sounds like either a UTI or unregulated blood glucose.

My dog is also diabetic. He also has a thyroid deficiency. He's been regulated for over 2 years and never goes out at night.

Sometimes blood glucose levels can go haywire for a time without any obvious reason. Stress can do it. I'd probably head for the vet for an expert opinion.

There is a lot of good information on the message board for [email protected]. The first few sections are excellent for information and the rest are messages from people who have diabetic dogs.

I hope your parents can find the time and money to see a vet now so they can solve the problem long term.

Keep us posted.

Mary