Women who always wear nylon pantyhose expose themselves to a host of foot problems. Nylon doesn't breathe and the heat that it generates and traps causes excessive perspiration. A warm, damp area is an ideal place for fungal infections such as Athlete's foot.
Inexpensive nylon pantyhose can also cause forefoot problems, because they don't allow the normal expansion of the foot when walking, and may pull the toes backward when the pantyhose ride up. The cramping and pressure of the hose can contribute to ingrown toenails and hammertoes.