Firstly, the only thing that has always been causing inflation is the manipulated and monopolized Fiat system.
Secondly, bitcoin is a deflationary currency. So, I leave you to do the maths!
As far as I know, inflation happens when the purchasing power of the people are greater than the supply. It means, if the people has high purchasing power, there is also a greater demand. We have limited resources only and if the supply will deplete, prices hike.
Based from my definition, I can say that inflation is applicable in bitcoin. Bitcoin is also currency and I think it will cause inflation but not in a rapid manner as what happened in dollar.