It isn't normal for my hand to flare up like this. It is strange: and very painful.
Have you changed soaps, shampoos, or washing up liquids? If it has just arrived, something in your life has maybe changed, though it could be hormonal.
Dare I mention the menopause?
One of the most common skin changes brought on by menopause is dry and itching skin. This is caused by the drop in estrogen that occurs in menopause. Estrogen acts as one of the skin's natural hydration boosters as it facilitates the production of ceramides, natural hyaluronic acid, and sebum.