Onychorrhexis Kevin Nicholls 07/04/2023 55 Views Onychorrhexis is a term used to describe brittle nails that are prone to splitting and cracking. It can be caused by frequent exposure to water, harsh chemicals, or certain medical conditions such as hypothyroidism. Related Articles: Understanding Onychorrhexis and Its Impact on Nail HealthGlossary: Lamellar dystrophy