Hi My Husband Is 3 Weeks Post Chemotherapy, This Is

Hi my husband is 3 weeks post chemotherapy, this is the start of his second lot of treatment. He was diagnosed with lung cancer in September 2015 and underwent 4 doses plus radiotherapy, unfortunately it has metastesize done and is in his liver now so his oncologist has started another, different type. He is due to start his second dose this Tuesday but has developed a very painful experience, itchy rash on both his hands and fingers and it has spread to his nose. His go has told him to use the dermovate lotion but it is useless. I called 111 this evening and he is now on an antihistamine and dihydrocodeine but nothing is working. He is beside himself with it. Can you suggest any other cream he could use please and is this a result of this new chemo?