Onychomycosis, also known as toenail fungus, is a type of fungal infection that affects the nails, including those on the toes. It is primarily caused by different types of fungi called dermatophytes, but other fungi such as yeasts and mold can also be culprits. These fungi thrive in warm and damp conditions. https://podiatryabc.com/o-is-for-onychomycosis/