Nails with uneven lines may be caused by trauma, onychomycosis, psoriasis and other diseases.
1. Trauma: the nail plate is hit by external force, resulting in uneven lines on the nail at the place of trauma.
2. Onychomycosis: manifested as cloudy nail plate, uneven surface, color change, etc. It is caused by dermatophyte infection, or direct infection of tinea pedis. Patients will have the symptom of uneven lines on nails.
3. Psoriasis: when psoriasis involves the nails, the nails can be “thimble-like” or dotted depression, nail separation, hyperkeratosis under the nails, etc. It is mostly caused by hereditary and environmental factors, and the patients will show that their nails have uneven lines.
There are many reasons for the unevenness of the nails, and it is recommended that patients go to the hospital in time to clarify the cause of the disease.