There is a crack in the middle of the nail, looking as if it were caused by a knife sliding across it.
Disease description:
I am 30 years old. Recently, I noticed a noticeable crack running across the middle of my fingernail. The crack resembles a horizontal slit caused by a knife, without any pain, but it affects the appearance. I am concerned whether this could be a sign of an underlying medical condition. Could you please explain what might cause a crack to appear in the middle of a fingernail?
Doctor's answer (1)
Dr. Liu Wenmin
Cracks on the fingernails can be caused by various factors, including malnutrition, dehydration, chemical damage, or reflections of certain health issues within the body. For example, deficiencies in nutrients such as iron, protein, vitamin A, B vitamins, and zinc may lead to brittle and easily cracked nails. In addition, frequent exposure to chemicals such as detergents and cleaning agents can also damage the nail structure.
Pay attention to whether the cracks are accompanied by other symptoms, such as changes in nail color or deformities. If so, seek medical attention promptly. Increase your intake of protein, vitamins, and minerals by consuming more lean meat, fish, eggs, legumes, and fresh fruits and vegetables. If the cracks persist or worsen, it is recommended to visit a dermatology clinic at a hospital for a detailed examination.
