Patients with tinea capitis definitely need to avoid many things in their diet. First and foremost, they must abstain from alcohol as it causes the capillaries to dilate and congest, which can worsen the condition. Secondly, they should avoid foods that are known to trigger outbreaks, such as sea fish, shrimp, and crabs. These foods can cause exacerbation and flare-ups of the skin lesions. Lastly, they should avoid eating overly greasy, overly spicy, and stimulating foods, as well as deep-fried foods, such as onions, garlic, pepper, chili peppers, mustard, and so on.