Any advice on itching? My dad has bcell, he’s done 3 infusions of rituxan. 4th is next week but they think they’ll need to add in chemo. But the itching has been insane for him. He’s on gabapentin. He’s tried antihistamines. Benadryl. Nothing is working at the moment. Had some relief after first 2 infusions but it’s back. Thanks!