“The causes of thickened and whitened toenails are as follows.
Consider a thickened and white toenail caused by a fungal infection. When a fungus invades the toenail, if the toenail is in a confined, moist or higher temperature, it is conducive to fungal reproduction and can easily cause infection.
The fungus invades the surrounding skin and nail plate, promoting the accumulation of keratinous material around it, which affects the growth of the toenail, resulting in a thickened, whitish toenail.
In addition, if the elderly only have thickened and whitened toenails, it may be caused by ageing, which may slow down the metabolism of the cuticle and the lack of nutrient utilization or malnutrition.