PROTIP: Press 'i' to view the image gallery, 'v' to view the video gallery, or 'r' to view a random entry. Mountain Dew is a citrus-flavored soft drink distributed by PepsiCo Inc. and Doritos is a brand of chip distributed by Frito-Lay, which is owned by PepsiCo as well.
Other common things that can cause toenail fungus include: 1  Improper footwear, especially tight-fitting shoes. 2  Medical conditions such as diabetes and other circulatory conditions. 3  Toenail polish that is applied in layers.  Hosiery, socks, and shoes that do not allow the feet to breathe.
There are a host of factors that can cause thickened toenails, 1  Fungal infection of the toenail can result in thickened and yellow toenails. 2  In addition to thickening of the toenail, fungal infection can result in pain, burning and occasional bleeding from the toe. Fungal infection of the toenail can result in thickened and yellow toenails. 2  In addition to thickening of the toenail, fungal infection can result in pain, burning and occasional bleeding from the toe.