Ive heard it said that diabetes can cause itching all over with some people and often the skin is dry so keep moisturising all over avoiding perfumed soaps etc and see if that helps
I am itchy all over too. Especially my back and arms. I use Eucerin Calming cream, that seems to help most of the time. Also a hot shower on my back...
If you find something better, let me know... I'll try it.
I'm finding a lot of little symptoms of diabetes and fibromyalgia that overlap. The itching, tiredness, dry skin , ....
Some meds side effects include yeast infections,etc. e.g. Farxiga.
Not sure that is a diabetic thing but it can be a sign of under active thyroid (hypo thyroidism) have an endocrinologist test you for that. For me, regular doctors didn't catch it till I was referred over.