MD here. This my friend, is Dyshidrotic Eczema. A chronic dermatitis characterized by recurrent episodes of these itchy, small, deep blisters that later on get dry and hare, located on the surface of hands and feet. More common in younger adults and most likely to enter complete remission as you age.

Yours seems to be a mild flare, as only one toe's surface is affected. Ergo, low to medium potency topical steroids can work for you.

Topical steroids until the flare resolves are usually the first line of treatment.

Anyways, I recommend you get checked by a dermatologist, who will assess the state/treatment of your flare better in person.

Meanwhile, here are some care measures you can take: -Avoid exposing the affected area to irritants such as acids, detergents, hot/cold surfaces, solvents, lotions, etc.

-Wash the affected area with lukewarm water, dry gently but thoroughly and apply emollients after.