In general, a nail fungus will not go away on its own.  However sometimes trauma to the nail can appear as a fungus, and this will occasionally grow out on its own. If you have a question about if a thickened nail is a fungus or not, there is a way to determine if it is by performing a biopsy.  If you have any questions regarding a fungal nail infection, make an appointment today! We will recommend Tolcylen topical nail ointment to treat the nail. There are other options for treatment that can be discussed as well.