A dive buddy who complains of unusual tingling, numbness, and weakness after a dive may be experiencing **A. Decompression Sickness**. This condition can occur when a diver ascends too quickly, causing nitrogen bubbles to form in the body, leading to various neurological symptoms, including tingling and numbness. Nitrogen Narcosis, on the other hand, typically occurs at greater depths and is characterized by a state of euphoria or impaired judgment rather than the specific symptoms mentioned.