👉 Erythrorchis is a type of fungus that can cause blisters on the skin, often under the nails or toenails. It is commonly found in warm and humid climates, and it thrives in environments with high humidity levels. The fungus produces spores that are carried by wind or water and can spread to nearby individuals through contact with infected surfaces. Symptoms of erythrorchis include blisters on the skin, often under the nails or toenails.