Doji candlestick patterns are significant indicators in forex trading, signaling market indecision. There are several types of Doji patterns, each with unique characteristics and implications:

1. Standard Doji: This basic form appears as a cross or plus sign, where the opening and closing prices are virtually equal. It indicates a balance between supply and demand, suggesting market indecision.

2. Gravestone Doji: Resembling a "T," this pattern forms when the open, low, and close prices are near the same level, with a long upper shadow. It often indicates a bearish reversal at the end of an uptrend, suggesting that buyers dominated the session but were overpowered by sellers by the close.

3. Dragonfly Doji: Shaped like an inverted "T," it occurs when the open, high, and close prices are nearly the same, with a long lower shadow. This pattern often signals a bullish reversal, indicating that sellers controlled the session but buyers pushed prices back up by the close.

4. Long-Legged Doji: Characterized by long upper and lower shadows with the open and close near the midpoint, this pattern indicates extreme indecision, with both buyers and sellers vigorously contesting the price direction but ending in a stalemate.

Understanding these Doji patterns helps traders recognize potential trend reversals and market indecision, enhancing their trading strategies. However, it is crucial to use Doji patterns in conjunction with other technical indicators and market context for more reliable predictions.