What’s wrong with 15% azelaic acid gel that itches when you apply it?

15% Azelaic acid gel coated with itching may be due to the drug caused local allergic reaction, resulting in contact dermatitis.
Clinical part of the patient may be allergic, especially in contact with external allergens, will cause an allergic reaction, if this part of the patient is allergic to azelaic acid gel in certain components, may be in the use of azelaic acid gel, rapid allergic reaction, local erythema, papules, itching and other symptoms of contact dermatitis.
Patients in the use of azelaic acid gel after the appearance of localized rash with itching and other symptoms, should pay close attention to the need to immediately use warm water to wash the face of the drug in a timely manner to reduce the local stimulation, and then promptly go to the hospital, under the direction of the doctor, as appropriate, topical dinexed cream and other glucocorticoid ointment, itching is serious need to be orally loratadine and other antihistamine medication.
If the patient applies 15% azelaic acid gel after the symptoms of itching, you should immediately stop using the drug, go to the hospital in a timely manner, under the guidance of the doctor’s anti-allergy treatment, or replace other drugs instead of treatment.