what causes a head fake price move 
typically a head fake move will involve a test of important technical support or resistance such as trendline support in an uptrend or a test of key moving averages these technical levels are made to be tested and frequently stop loss orders to buy sell are placed around that price level if the price move tests or breaks these levels stop loss orders may be triggered bringing in temporary buying selling pressure if the technical level is regained within a short period of time hours for day traders days for longer term traders the market has likely shown its hand as a head fake or a false break of that technical level 