Fewer and fewer crescents on the fingers can be caused by physiological factors such as malnutrition, age, etc., or by disease factors such as psoriasis. If the crescent on the finger becomes less and less, it can be a normal phenomenon caused by aging, or it can be caused by malnutrition, so you should strengthen the nutritional intake and pay attention to rest, etc. In addition, if psoriasis involves the nail, it can disappear. In addition, if psoriasis affects the nails, the crescent may disappear, and the nails may become cloudy or even peeled off, which requires timely medication such as beclomethasone propionate ointment. If there is a sudden decrease in the number of crescents on the fingers, go to the hospital in time, and follow the doctor’s instructions when using the above drugs.