Hello. I read your query and noted the contents. Elderly patients present very atypically during times of infection. I would suggest you to do a urine routine examination again as he could be having an infection. Secondly, a diabetic patient can have frequent falls as a result of neuropathy (nerve damage). They loose their joint position sense and it can cause falls. They have less sensation on the feet which can cause them to fall down. Finally, an elderly person who is mostly indoors will be low in vitamin D and the link between vitamin d levels and falls are well documented. You should visit your primary care physician. Meanwhile, if you have any more clinical details and/or reports I will be happy to help. Wishing him good health. Take care.Regards, Dr Praveen