How can i tell if i have a toenail fungus?

To be SURE...: You need to have a biopsy or fungal culture of the nail.

Thick yellow...: Usually a fungal infection on a toenail presents like a thick toenail, yellow or white color, and with subungual debris (white stuff under the nail).

Sample.: Have your doctor take a sample of your nail and send it to a lab for identification. Your nail might change due to fungus, or due to trauma. If it's fungus, your doctor can help you with treatment options.

See below: There are many treatments including topical medication, prescription medication, laser treatment, removal of the toenail.

Options available: Topical medications work depending on the degree of the disease, same as for laser therapy. Oral medications are generally avoided. May consider surgical removal of the diseased nails and the topical therapy to follow - see your foot dr for the discussion.