Nails with horizontal lines may be caused by onychomycosis, malnutrition, psoriasis and other reasons.
1. Onychomycosis: Onychomycosis is a nail lesion mainly caused by skin fungus invading the nail plate and nail bed, which leads to the situation of having horizontal lines on the toenails, and usually can be combined with the thickening of nails, color change and other abnormalities.
2. Malnutrition: lack of protein, calcium, zinc, iron, vitamins and other nutrients, resulting in malnutrition, can lead to nail matrix cell dysfunction, which can cause the phenomenon of toe nails with horizontal lines.
3. Psoriasis: Psoriasis is a chronic scaly skin disease that can involve the nails, leading to abnormal growth of the nail plate, which can lead to the appearance of horizontal lines or horizontal grooves on the toenails.
If you have horizontal lines on your toenails, you should go to the hospital in time to do the relevant examinations, to clarify the specific causes, and then carry out targeted treatment.