The delta-normal method, which uses the delta to approximate the change in the price of an option, has limitations when dealing with options. This method can significantly misrepresent the risks associated with options, particularly because it only considers the linear component of the price change (delta) and ignores the convexity (gamma). Specifically, it tends to understate the risks of long positions in calls because it does not fully account for the increasing delta as the underlying asset price rises, leading to potential underestimation of the risk. Conversely, it overstates the risks of short positions in puts, as the delta of puts decreases less dramatically when the price of the underlying asset falls.