Girls, hello everyone! Who had this? Tell me. The child's bottom is re…

Girls, hello everyone! Who had this? Tell me. The child's bottom is reddened, I attach a photo. For two days I have been putting him Genferon candles, and now at night he has such redness. For another two days I do inhalation of Berodual + Pulmicort, also according to the doctor's prescription. Before that, for 10 days I took Sinecod solution. Aqua Maris in the nose and Zyrtec drops for several days. Can it be an allergy to Pulmicort, Berodual or Genferon? The baby coughs. He had a dry cough before, and now a wet one. And still a little runny nose. What should I do, tell me