There is a vertical line on the fingertip.
A vertical line on the finger may result from both physiological and pathological causes. Pathological causes include anemia and onychomycosis, and treatment should be based on the specific underlying cause. Detailed analysis is as follows:
I. Physiological Causes
Skin laxity and aging may lead to thickening of the keratin layer and thinning of the dermal layer, resulting in vertical ridges on the fingers. This is a normal physiological phenomenon. Adequate rest and timely nutritional supplementation are recommended.
II. Pathological Causes
1. Anemia: Picky or selective eating habits may lead to iron deficiency, reducing red blood cell production. Patients can be treated with medications such as protein succinic acid iron oral solution.
2. Onychomycosis: Fungal infection of the nail may occur due to hand exposure to fungi, trauma causing nail plate infection, or frequent wet hands during household chores. Treatment may include oral antifungal agents such as terbinafine hydrochloride tablets.
In addition, vertical lines may also be associated with nail melanosis, trauma, or gray nails (onychomycosis). It is recommended to seek timely medical evaluation to determine the exact cause and receive appropriate treatment.