You are seeing a 55-year-old male who has presented to you in a GP setting complaining of pain when passing urine and an increased need to urinate. You do some basic observations which are as follows: BP 120/83, RR 28, HR 98, O2 saturations 99% on room air and a temperature of 38.4 degrees. He is also complaining that he is hot and cold at the same time. What is the most appropriate step in the care of this patient?