Ever since yesterday, my fingers have a bunch of tiny small white spots/bumps and my fingertips feel hard/numb. ?

Bumps on Fingers: Dyshidrotic eczema is a condition in which small, usually itchy blisters develop on the hands and feet. Causes, incidence, and risk factors this blistering type of eczema is twice as common in women than men. People are more likely to develop dyshidrotic eczema when: they are under stress they have allergies, such as hayfever their hands are often in water or moist topical cortisone helps.