What type of injury does nail pterygium usually result from?

Nail pterygium is a condition characterized by the abnormal growth of skin over the nail matrix, often leading to deformities in the nail itself. This condition typically arises from severe thermal injuries, as the heat can damage the surrounding tissue and matrix of the nail. Such injuries trigger an inflammatory response that may lead to the thickening and adherence of the skin to the nail.

While other types of injuries like minor cuts, nail-biting, and simple abrasions may impact the nail area, they generally do not lead to the significant changes associated with nail pterygium. Severe thermal injuries cause much more extensive damage, prompting a stronger biological response that is particularly conducive to the development of this condition. Understanding the specific nature of pterygium is vital for effective prevention and management in nail care practices.