What causes minor fingernail separation?

Minor fingernail separation, also known as onycholysis, can be caused by various factors including trauma to the nail, exposure to moisture or harsh chemicals, and fungal infections. It may also result from underlying health conditions, such as psoriasis or thyroid disorders. In some cases, frequent manicures or improper nail care techniques can contribute to the separation. Maintaining nail hygiene and avoiding excessive exposure to irritants can help prevent this condition.