There is a vertical ridge on the fingernail of the middle finger.
Nov 29, 2025
Source: Cainiu Health
Dr. Liu Wenmin
Introduction
A vertical ridge on the fingernail of the middle finger may be caused by aging, nutritional imbalance, nail dystrophy, onychomycosis (fungal nail infection), or eczema. It can be improved through nutritional supplementation, enhanced nail care, and medical treatment. If the ridge becomes wider, darker, or is accompanied by nail thickening, prompt medical attention is necessary. With advancing age, nail metabolism slows down and keratin production changes.
A vertical ridge on the middle fingernail may result from aging, nutritional imbalances, nail dystrophy, onychomycosis (fungal nail infection), or eczema. Improvements can be achieved through nutritional supplementation, enhanced nail care, and medical treatment. If the ridge widens, darkens, or is accompanied by nail thickening, prompt medical attention is recommended.
1. Aging: As people age, nail metabolism slows down and keratin production becomes uneven, leading to fine vertical ridges. This condition typically causes no other discomfort. It is advisable to keep hands well-moisturized, avoid nail injuries, and regularly trim nails to maintain neatness.
2. Nutritional Imbalance: Long-term deficiency in vitamins A and B complex, or trace elements such as iron and zinc, can impair healthy nail growth and lead to prominent vertical ridges. It is recommended to adjust the diet by consuming more foods rich in vitamins and minerals. Nutritional supplements may be taken under a doctor's guidance if necessary.
3. Nail Dystrophy: Insufficient nutrient supply to the nails or external irritation may cause the nail plate to become thinner and develop vertical ridges, possibly accompanied by brittleness and loss of luster. Under medical supervision, medications such as vitamin A soft capsules, compound vitamin B tablets, or oral zinc gluconate solution may help improve symptoms.
4. Onychomycosis (Fungal Nail Infection): Fungal infection of the nail by dermatophytes damages the nail's keratin layer, causing vertical ridges, thickening, brittleness, and sometimes discoloration. Treatment under a doctor’s guidance may include topical amorolfine hydrochloride solution, itraconazole capsules, or terbinafine hydrochloride cream to relieve symptoms.
5. Eczema: Hand eczema spreading to the area around the nails can cause inflammation that disrupts nail growth, resulting in vertical ridges, cracking, along with skin itching and red patches. Patients may use medications such as desonide cream, calamine lotion, or loratadine tablets as directed by a physician to alleviate symptoms.
To promote healthy nail growth, practice proper hand care by avoiding exposure to irritating chemicals. Wear rubber gloves when doing household chores, avoid cutting nails too short, and maintain a balanced diet rich in essential nutrients.
