Brown vertical lines on the right thumb nail may be related to malnutrition, onychomycosis and onychomatous nevus.
1. Malnutrition: brown vertical lines on the right thumb nail may be related to malnutrition, lack of trace elements or vitamins. You can go to the hospital for a checkup to see if there are any trace element deficiencies. If there is a trace element deficiency, it can be treated with medication and food.
2. Ringworm of the nail: ringworm of the nail, commonly known as gray nails, caused by fungal infection, the patient may have brown vertical lines on the nails, oral itraconazole capsules or oral terbinafine hydrochloride and other antifungal drugs.
3. Nail mother nevus: It is a kind of nevus, with the growth of nails, the melanin brought out by the nevus cells forms a black line. It mostly grows on the fingernail and appears alone without itching or pain. Generally, treatment is not necessary and regular follow-up is sufficient.
If brown vertical lines appear on the right thumb, it is recommended to go to the hospital in time to clarify the cause of the disease and then carry out symptomatic treatment. Medication should be prescribed by the doctor.