A client who suffers from frequent panic attacks describes the attack as feeling disconnected from himself. The nurse notes in the client's chart that the client reports experiencing:

Choice A reason: Hallucinations involve perceiving things that are not present, such as hearing voices or seeing images. Panic attacks do not typically produce hallucinations, and the client’s description of feeling disconnected from himself does not align with sensory misperceptions. Choice B reason: Denial is a defense mechanism where a person refuses to acknowledge reality or the severity of a situation. The client is not denying the panic attack but rather describing a subjective experience of disconnection, making denial an inaccurate interpretation. Choice C reason: Derealization refers to feeling that the external environment is unreal or distorted. While related, the client specifically describes feeling disconnected from himself, which is more consistent with depersonalization rather than derealization. Choice D reason: Depersonalization is the correct term for feeling detached or disconnected from oneself, as though observing oneself from outside the body. This matches the client’s description and is a common symptom during severe panic attacks.