I nave slightly high blood pressure and my perindopril tablets have been increased from 4mg to 8mg. Recently I have experienced a skin rash to my lower back, inside my elbows and behind my knees which have caused a lot of itchiness which I thought was due to high humidity. I started to treat myself with prickly heat powder and spray. Over the Easter period my doctors surgery was closed so I made an appointment with a 24 hour surgery and was told to stop the prickly heat treatment and to use Hydrozole antifungal cream and to take a Telfast table once per day. The rash has subsided but the itching persists. My usual doctor is concerned with the performance with my kidneys. What do you suggest ? I expect to contact my usual surgery soon but would like to know your advice also. Regards Peter Dawson