The majority of my fingertips is dry and cracked, kinda painful. what can this be and how can i treat this naturally if possible?

What causes eczema?: Cortisone cream is needed to treat hand eczema; but see if there's a reason. Some chemicals can cause eczema rashes, including chemicals one is allergic to, chemicals that cause an irritating reaction in skin, chemicals that are toxic to skin cells, and chemicals that wash off natural skin oils. People with sensitive skin should wear non-latex gloves when using chemicals, even household cleaners.