Pitting of the finger (toe) nail is a symptom of psoriasis involving the nail. Psoriasis of the nail matrix area will show pitting of the nail plate, ridges and grooves, while nail peeling, hyperkeratosis under the nail and ruptured bleeding. Psoriasis, commonly known as psoriasis, is a chronic inflammatory skin disease with a long course, a tendency to recur, and in some cases, almost lifelong. The onset of the disease is predominantly in young adults and has a greater impact on the physical health and mental status of the patient. The clinical manifestations are mainly erythema and scaling, which can develop all over the body, with the scalp and extremities more common, mostly aggravated in winter. The nail bump phenomenon is mainly due to the lack of vitamin A and calcium, so you should eat a certain amount of carrots, egg yolks and other foods. Develop good eating habits. Do not drink alcohol, do not smoke, do not eat spicy and stimulating food, as well as mutton, seafood and other fishy products. Remove the lesion. Actively treat infected wounds and inflammation, especially tonsillar abscesses and swelling. Removing the tonsils that are often inflamed can facilitate the treatment and prevention of psoriasis. Take folic acid, vitamin A, vitamin C, vitamin B12 and other drugs internally frequently. More than 75% of patients with psoriasis are accompanied by impatient, agitated and irritable bad moods. Many patients develop or aggravate the disease due to mental stimulation, while some patients heal themselves due to cheerful mood. Therefore, establishing confidence in overcoming the disease and maintaining a calm and peaceful state of mind is a good medicine to prevent psoriasis from recurring.