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A toenail fungus will get under the surface of the nail where it takes hold and may even spread to other toenails. Left untreated, the infection may make it difficult to walk and work. The thicker toenails are hard to trim and make it painful to wear shoes.
Fungal nail is contagious and you are vulnerable in public areas like swimming pools, showers, spas and locker rooms. People with diabetes or who suffer from circulatory problems or immune deficiency are prone to toenail fungus.