Small, watery blisters on fingers. usually same finger. what can i do to prevent & treat?

Dyshidrotic Eczema: Dyshidrotic eczema causes small fluid-filled blisters called vesicles appear on the fingers, hands, and feet. They are most common along the edges of the fingers, toes, palms, and soles. These blisters can cause intense itching and scaly patches of skin that flake constantly or become red, cracked, and painful. Treatment is usually with strong topical cortisone creams like clobetasol.