Metronidazole is used to treat diseases such as intestinal and extraintestinal amebiasis and trichomoniasis of the vagina; taking metronidazole for itchy skin does not work. Metronidazole is an antimicrobial drug that treats intestinal and extraintestinal amebiasis. It is commonly used in the treatment of anaerobic bacteria, trichomonas and protozoa infections, so metronidazole can not treat itchy skin, on the contrary, it may appear itchy skin and other symptoms after using the drug. Itchy skin is generally divided into generalized and limited itch, first of all, you should clarify the causes of itching and try to remove the itch, itching is obvious when you can be under the guidance of a doctor, apply lidocaine gel, ketoconazole cream, etc. to stop itching locally or oral antihistamines, such as terfenadine, levosulpiride and so on to treat. There are many clinical causes of itchy skin, and patients are advised to go to the hospital to find out the cause of the disease and give treatment. Please follow the doctor’s advice when using drugs to avoid serious consequences.