Uneven nail surfaces require careful observation of the appearance of the nail surface to determine how the factor is formed. If the unevenness is punctate in appearance, with white depressed dots, it is possible that the nail damage is caused by psoriasis, which is triggered by the growth of psoriasis lesions on the nail area. Generally, it is not painful or itchy, but in some cases, typical psoriasis changes may appear around the nails or on the palms of the hands. If the nail depression is a depression in the middle with raised edges, it is considered to be caused by iron ion deficiency, which affects the appearance of the nail during the growth process. It is advisable to go to the local hospital for a trace element test, and if the iron ion deficiency is clear, targeted supplementation will be possible. Some special types of work, prolonged use of nails in contact with certain external substances, but also easy to cause bumpy.