Uneven fingernail cover may be due to the lack of certain trace elements, as well as fungal infections, weather causes, you can use drugs, such as zinc gluconate oral solution, etc., and improve lifestyle habits to alleviate. 1. Lack of certain trace elements: If the body is deficient in calcium, it may cause unevenness of the fingernail cover, you can find out the cause through the trace element examination, if calcium deficiency should follow the doctor’s instructions to take zinc gluconate oral solution or calcium gluconate oral solution and other medications, to give the body to replenish the trace elements. 2. Fungal infections: If fungal infections lead to the symptoms of gray fingernails, it is necessary to promptly follow the doctor’s instructions to apply terbinafine hydrochloride cream and other drugs to relieve the symptoms. 3. weather reasons: if the weather is gradually cold, often in the cold environment of blood vessel contraction, there will be a slowdown in blood flow, may lead to peripheral tissue hypoxia aggravated, thus causing unevenness of the nails, to improve the habits of life, do a good job of keeping the body warm to improve. There are many causes of uneven fingernail cover, it is recommended to go to the hospital for examination, according to the cause of timely treatment. Drugs should be applied under the guidance of a doctor.