Patients with psoriasis usually have no dietary requirements for contraindication and can usually eat mutton. Because psoriasis does not belong to allergic diseases, there is usually no need for additional avoidance of food. Only when the patient is in the acute progressive stage, the patient may be advised to pay proper attention to diet and eat less irritating food to avoid aggravating the inflammatory skin reaction, or some patients with allergies may trigger skin allergy after eating certain foods, and the allergic rash may turn into psoriasis lesions. Therefore, patients with allergies need to avoid eating properly. Generally speaking, psoriasis patients do not need to abstain from eating, except when the disease is in the progressive stage, they need to pay proper attention to their diet, or they need to abstain from eating when they are accompanied by allergies, usually psoriasis patients do not have too many restrictions on their diet. Therefore, psoriasis patients can eat lamb, and as long as there are no allergies, there are no excessive restrictions on their diet.