Patients with tinea capitis should not eat mutton. Mutton is considered a dry and hot food, and consuming it can worsen the symptoms of tinea capitis, especially burning and itching. In addition to mutton, there are many other foods that patients with tinea capitis should avoid. For example, fried foods, greasy foods, and spicy foods should be avoided or consumed less. Furthermore, seafood and foods that are rich and potent should also be avoided.