Even foods such as nuts, shellfish, and benzoate-preserved items may lead to an outbreak of hives. Sometimes physical factors such as sun or cold exposure can be implicated. All potential offending foods and drugs should be stopped. Other non sedating antihistamines such as Zyrtec, Claritin, or Allegra can also be used. They are more expensive and require a prescription.
Creams usually offer little relief.
Be calm and try to avoid scratching as this leads to more hives. If your rash is not responding visit your health care provider or come down to the Student Health Service if you are an SFSU student.