Hi, Anal itch can have a lot of causes including infective and non-infective. Amoxiclav sometimes cause liquidy stools. Maybe due to the consistency of the stools, there is micro-leakage that may be the reason for itch. Another reason could be the yeast infection that can be due to the treatment with an antibiotic. I would suggest you use Nystatin and Triamcinolone acetonide cream for application at the affected area. Also, follow the following measures: •     Cleaning efforts should include gentle showering without direct rubbing or irritation of the skin with either the washcloth or towel. •     After bowel movements, moist pads (such as baby wipes, flushable moist wipes, and flushable anal cleansing wipes) should be used for cleaning the anus instead of toilet paper. •     If there is constant moisture present in the anus or stool incontinence, it may be necessary to clean the anus with moist pads between bowel movements. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Maninder, General & Family Physician