Nylon spandex fabric, also known as spandex or elastane, is a type of synthetic fiber that combines the stretchy and elastic properties of spandex with the strength and durability of nylon. While this type of fabric is popular in the clothing industry for its stretch and comfort, there are a few potential problems that can arise during its use:

Pilling: One issue that can occur with nylon spandex fabric is pilling, which is when small balls of fabric form on the surface of the material. This can happen due to friction from wearing or washing the fabric, and can make the fabric look worn or old.

Snagging: Because nylon spandex fabric is stretchy, it can be more prone to snagging or tearing than other types of fabrics. This can be a problem if the fabric is used in clothing that will be exposed to rough surfaces or sharp objects.

Fading: Nylon spandex fabric may also be prone to fading over time, especially if it is exposed to sunlight or harsh washing chemicals.

Shrinkage: Nylon spandex fabric can shrink when exposed to high temperatures, which can be a problem if the garment needs to maintain its original size and shape.

Odor retention: Nylon spandex fabric can also retain odors more easily than other fabrics, which can be a problem if the garment is used for activities that cause sweating or moisture buildup.

To avoid these problems, it's important to follow the care instructions for the fabric carefully and to avoid exposing the fabric to rough surfaces, high temperatures, and harsh chemicals.