Patient: Acne on the whole face, most severe on the temples, hairline and jaw, has been going on for more than 2 months, but no improvement. On March 1, I went to Concordia Hospital to see you (No. 19), and you prescribed two topical and two internal medications. 2 topical medications (Bangsai and A Paste) were used for the first time that night, and I experienced redness and itchiness on my entire face. However, the next morning after the second use, in addition to the redness and itchiness of the entire face, the same symptoms also appeared on the neck, and they were very severe. Currently I have stopped using these 2 topical medications (now my face and neck are still in a red and swollen over state). How can I solve my current situation as soon as possible? Hospital Dermatology: Hello: Bansai has an irritant reaction and needs to be applied spot on the skin lesions when the facial skin is dry, not over a large area. Your case is an irritant reaction and can be reapplied after stopping the medication and waiting for the reaction to subside. If you want the irritation to subside faster, you can use cool water to wet compress the red and swollen skin. Come back to see the doctor if it is convenient.