Dragon fruit can be consumed when hives appear if there is no previous allergy to dragon fruit. There are no clear dietary restrictions for hives, and if you are not previously allergic, you can eat them when you develop hives. Patients with urticaria who have gastrointestinal discomfort need to eat soft and easily absorbed food, not to increase the burden on the gastrointestinal tract, which may lead to abdominal pain and discomfort. Patients with urticaria should not eat spicy food, which may stimulate the rash to worsen and itching to increase. Urticaria is mainly treated orally with antihistamines. In daily life, it is necessary to avoid contact with suspected allergens and avoid violent stimulation by heat or cold. In case of combined infection with pathogenic microorganisms such as bacteria and viruses, the infection needs to be actively controlled.