Bitcoin is a currency designed for deflation, not inflation, over time. However, this is not the current situation. Bitcoin is currently in a period with inflation, not deflation. This means that more fiat money (USD/EUR/etc) must keep flowing in each day in order to keep the price stable or rising.
Bitcoin is currently in a very bullish trend-channel. It is currently trading at $145 in a bullish trendchannel and both 15m and 60 minute charts look very promising.
Things look good for USD/BTC short-term. It is, however, very important to keep in mind that Bitcoin currently depends on a lot of new money flowing in each day in order to keep it’s current value or rise.
Fact: 25 brand new BTC are mined with each block. This works out to about 3600 brand new Bitcoins mined each day. The current price is, as said, $145. This works out to about half a million USD each day just to keep the current price – assuming all mined BTC are immediately sold at market value.