A Dragonfly Doji is a type of candlestick pattern that occurs when the opening and closing prices of a security are the same or very close to each other, creating a small or non-existent real body. It is characterized by a long lower shadow and little to no upper shadow, which looks like a "T" shape or a "plus" sign.

The Dragonfly Doji pattern often indicates a potential trend reversal from a downtrend to an uptrend. The long lower shadow suggests that prices have fallen during the trading session but then rebounded to close near the opening price, which could indicate that the bears have lost control of the market and the bulls are starting to take over.

Traders may use the Dragonfly Doji pattern to identify potential buy signals, with an expectation of a continuation of the bullish move. However, it's important to note that this pattern should be used in combination with other technical analysis tools and market conditions to confirm its validity.

Overall, the Dragonfly Doji pattern is a popular and useful technical analysis tool in forex trading and other financial markets. By combining this pattern with other technical indicators and analysis, traders can improve the accuracy of their trading decisions and increase their chances of success.