How to prevent And treat toe nail fungal? If the toe fungal has been existence for years will it treated easily?

Meds or surgery. Toenail fungus is usually bad luck. There is a medicine you can apply topically which sometimes works, but takes a long time. There are oral medications that still take several months, but are somewhat more effective. Getting rid of fungus that you have had for many years is tough. Sometimes the nail needs to be removed.