What the doctor put is obviously not correct. See, doctors do not listen in any country. you said it wasn't dryness OR water. It was like she didn't even read it.
anyway....
Keep track of what you eat BEFORE it happens. My bet is you are close to diabetic or you are not good with Wheat Flour. Try cutting out the Wheat Flour. OR... eat a lot of wheat flour and then watch your fingers!
Hello,
It can be due to dehydration and exposure to harsh soap and water. The other possibility is of aquagenic wrinkling of the hands which can be treated by 20% Aluminium Chloride Hexahydrate. Minimize contact with water and use mild soap like dove for washing hands. Also hydrate and protect hands by applying a moisturizing cream. At night, repair them with creams formulated from glycolic acid—a must for improving skin texture and tone. For a more intensive nighttime treatment, apply cream and then cover hands with gloves or socks.
If the symptoms worsen or persist then please consult a dermatologist. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your dermatologist. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.