Need advice for hand dermatitis

I'm confident I have hand dermatitis and I would really like some advice. :/ Basically, over the last 4-5 months, the backs of my hands have been getting increasingly more dry and now it's to the point where the skin feels scaly and itchy, and there are tiny sore lumps beginning to form in various spots on my fingers and the backs of my hands. I'm confident it's this because the pictures I looked at are spot on. There have been things like this in the past, but only mildly dry skin and one or two sore lumps that would go away after a short amount of time. There have been no changes in my routine (soap, clothing type, detergent, etc). I wasn't sure what tag(s) to use for this so please tell me if these are wrong. I can't currently see a doctor about this, but I really don't want it to keep getting worse, so can people please give me advice on what I can do at home? Products (preferably on the cheaper side), home remedies, etc. Thank you to anyone that reads this!