Azelaic acid after redness and stinging on the one hand may be a normal reaction, on the other hand, may also be caused by drug allergies, should immediately stop using the drug, and observe the local symptoms, if other abnormal symptoms, it is recommended to cooperate with medication and other ways to improve.
Azelaic acid is commonly used in the form of emulsion, commonly used in the treatment of infected acne, blackhead acne, and melanocyte hyperpigmentation (such as chloasma, melasma, dark spots and stretch marks, etc.).
Some people may experience redness, tingling and other adverse reactions after using the drug, which may be a normal reaction to acid brushing, so you can first suspend use of the drug and observe the local situation. If the symptoms are mild or subside on their own after a while, just keep the area clean, moisturized and protected from the sun.
If itching, swelling and other abnormalities occur, it is recommended to immediately wash the residual drug. If the symptoms are serious, you can take oral chlorpheniramine maleate, loratadine and other antihistamines as prescribed by the doctor, to help anti-allergy, stop itching.
If azelaic acid redness and tingling after use, should first stop the drug treatment, and according to the local symptoms, take appropriate measures, it is recommended to go to the regular hospital to consult the doctor, under the guidance of the doctor, choose the appropriate way to deal with.