Universal credit

Right so we went on Universal credit 30 th October 2018 as my wife became my career it was all straight forward apart from you get no money 5wks ,but what I don’t understand is why there asking for my doctors address to see if I can go to work focus interview, do they not keep any records I have had Parkinson’s for 13years on 44 tablets a year, dbs 8yrs, lower lumbar back pain so on. Do they think I’m going to get better do they know something I don’t. They also wanted bank accounts Jan to Feb this is ok I understand this .But it just gets me stressfull they need to be educated about Parkinson’s disease