Patients with tinea capitis need to avoid certain foods in their diet. First, do not eat foods that are high in fat, such as fatty meats and lard. Secondly, avoid spicy and irritating foods, as consuming overly spicy and irritating foods can increase dandruff and cause scalp itching, aggravating tinea capitis. Finally, do not eat chili peppers, mustard, raw onions, raw ginger, and alcoholic beverages, and be sure to maintain cleanliness and actively treat tinea capitis.