A Doji candlestick pattern occurs when the open and close prices of an asset are almost identical, creating a small or non-existent body with long wicks on either side. This pattern indicates indecision in the market, as buyers and sellers are equally balanced. Traders often interpret Doji patterns as potential signals of trend reversal or continuation, depending on the context and other surrounding candlesticks. Recognizing Doji patterns can help in making informed trading decisions based on price action.