Is it possible to smear the nose with Triderm in case of itching in the nose?

No, Triderm is not a preparation that can be used on the nasal mucosa. In addition, Triderm is a prescription drug, so the legitimacy and need for its use in therapy is assessed by the doctor. Do not use this preparation without consulting a doctor. I enclose a detailed description of the preparation you are asking about: https://www.gdziepolek.pl/produkty/79881/triderm-masc/apteki If it is necessary to administer the drug to the nasal mucosa, use the forms intended for this - nasal ointments, nasal gels, nasal drops or suspensions or nasal sprays. The composition and substrate of these products are suitable for nasal application, e.g. Hysan nasal ointment with vitamin A: https://www.gdziepolek.pl/produkty/89748/hysan-masc-do-nosa-z-witamina-a-masc-do-nosa/apteki Rinopantein nasal ointment: https://www.gdziepolek.pl/produkty/67588/rinopanteina-masc-do-nosa/apteki In the attached links you can compare the prices of preparations in online pharmacies and place an order with home delivery or collection at the pharmacy. I enclose additional information: https://www.gdziepolek.pl/artykuly/jak-stosowac-krople-do-nosa