Back of hand feels horribly itchy. Help?

Hello. I've been having excessive itchiness on the back of my left hand. It has developed into red spots and there is raised skin around the reddish spots. This maybe due to the fact that I scratch the region( red spots in pic) using clothing. Further, I always had a tendency to frequently wash hands with soap but after COVID, the intensity of hand washing has increased manifold. Now what is happening is that, when hands are wet, it itches significantly less, but as soon as it dries up it starts itching again. I've had such allergies around my neck region and was prescribed to apply Renidex drops and take Atarax 10 mg twice for neck-skin allergy situations. Can I use the same combination for my hand? Or should some other medicine be applied? Please help? It is spreading to rest of my hand too. 🙏