Toenail yellowing and thickening with horizontal lines may be caused by trauma, onychomycosis, malnutrition and other reasons.
1. trauma: toenails are subjected to collision, extrusion and other external forces, resulting in damage to the nail plate, which will lead to abnormalities in nail shape and color, and may appear as toenails become yellow and thick with horizontal stripes.
2. Onychomycosis: Onychomycosis is a kind of nail lesion caused by the skin fungus invading the nail plate and the nail bed, and it may appear that the toenail becomes yellow and thick with horizontal lines.
3. Malnutrition: If the body is malnourished, it will easily lead to the lack of protein, calcium, iron, zinc and other nutrients needed by the toenails, making the stagnation and obstruction of the function of the nail matrix cells, and the manifestation of the toenails turning yellow and thickening with horizontal stripes may occur.
If your toenails become yellow and thick with horizontal stripes, it is recommended that you go to a regular hospital in time and receive standardized treatment under the guidance of your doctor.