What can result from improper nail care or preparation?

Improper nail care or preparation can lead to contagious infections, such as Pseudomonas, which is a bacterium that thrives in moist environments. Poor hygiene practices, inadequate sanitation of tools, or failing to properly prepare the nail plate can create an environment conducive to bacterial growth. This can result in infections that manifest as greenish or black discoloration under the nail, often accompanied by discomfort and other symptoms.

Maintaining proper nail care, including using sanitized tools and techniques, is crucial to preventing such infections. Strengthening nails and promoting healthy tissue growth are positive outcomes of proper nail care, while decreased nail flexibility can be an issue stemming from other factors. However, it is the risk of contagious infections that most directly stems from negligence in nail care practices.