What is a common result of improper filing technique?

Improper filing technique is known to lead to splitting nails. When nails are filed incorrectly, it can create weak points along the nail plate, making it more prone to breaks and splits. This can occur from using a file that is too coarse or applying too much pressure while filing. A smooth and gentle filing technique is essential for maintaining the integrity of the nail structure.

Other options may relate to various nail issues, but they arise from different causes. For instance, hangnails are usually a result of dry skin around the nail area, agnails (or perionychia) typically relate to inflammation or infection of the skin around the nails, and fungal infections are caused by various pathogens rather than filing techniques. Thus, splitting nails is directly associated with improper filing practices.