For itchiness: use ku shen 150 g. Soak in 2,000 cc of water an hour. Bring to boil. Simmer till 1,000 cc is left. Wash affected area. Twice a day.

• 苦参煎剂止瘙痒:苦参150克，加水2000毫升，先浸泡一小时，待烧开后，用文火煎至1000毫升，分成两次，每天早晚用来洗浴患处。