Horizontal lines on toenails may be caused by nail malnutrition, trauma, onychomycosis, psoriasis and other skin diseases.
1. Nail malnutrition: the patient’s body does not take in enough nutrients, resulting in the lack of some vitamins and trace elements, which leads to abnormal nail growth, resulting in horizontal lines.
2. Trauma: when the toe trauma can cause nail plate damage, so that the newborn nail plate appears to change the shape, the toenail will also produce horizontal lines.
3. Inflammation of the nail groove: If the patient has an inflammation of the nail groove, the inflammation of the nail groove will affect the blood circulation around the nail, and the supply of nutrients will be abnormal, which will lead to the growth of the nail to appear deformity, and then have the appearance of horizontal lines on the toenails.
4. Psoriasis and other skin diseases: If the patient has psoriasis and other skin diseases, it can cause damage to the patient’s nail, which can be manifested as thickening of the nail, nail peeling, etc. The growth of the nail is abnormal, which can also cause the nail to grow abnormally. Abnormal growth of the nail plate can also cause the nails to produce horizontal lines.
There may be other reasons for the horizontal lines on the toenails, the patient should consult a doctor in a timely manner to clarify the cause of the disease, and follow the doctor’s instructions for targeted treatment.