Uneven fingernails in children may be related to trauma, malnutrition, onychomycosis, anemia and other reasons. 1. Trauma: If a child’s finger is traumatized, the fingernail may appear uneven, accompanied by pain symptoms. 2. Malnutrition: If a child is partial to food or picky about food, it may lead to a lack of nutrients in the body, making the nails uneven and so on. 3. Onychomycosis: When the fungus invades the nail plate or under the nail, it can cause discoloration, separation and unevenness of the nails. 4. Anemia: Iron deficiency anemia, in particular, can cause spatulate nails and uneven fingernails. Parents are advised to take their children to the hospital in time to clarify the cause of the disease and standardize the treatment under the doctor’s guidance.