Consider making tea with 2 tsp of marshmallow root bark per 1cup of hot water (steep in a covered pot for at least 5 minutes).
Drink several times a day or as needed . **
or add 2 tsp of slippery elm bark to 1 cup of hot water (steep for at least 5 minutes in a covered teapot). Drink this as needed to relieve itchinessor a few times per day. Slippery elm bark lozenges are also helpful.