KembaraXtra – Psychology: Concussion

Definition

A concussion is a form of mild traumatic brain injury caused by a blow to the head, a rapid acceleration or deceleration of the body, a fall, or an explosion. It temporarily disrupts normal brain function and may occur with or without loss of consciousness.

Neurological Mechanism

Sudden mechanical forces cause the brain to move within the skull, producing changes in neural membranes, metabolism, blood flow, and communication among brain cells. Standard structural brain imaging may appear normal because concussion often involves functional disturbance rather than visible tissue damage.

Symptoms and Psychological Effects

Symptoms may include headache, dizziness, confusion, slowed thinking, memory problems, nausea, sensitivity to light or noise, irritability, sleep disturbance, and emotional changes. Most people recover, but some experience persistent symptoms that interfere with school, work, mood, and daily functioning.

Clinical Significance and Management

Anyone with suspected concussion should be assessed appropriately, especially when symptoms worsen or warning signs such as repeated vomiting, seizure, severe confusion, weakness, or declining consciousness occur. Management typically involves temporary reduction of physical and cognitive strain followed by a gradual return to activity under clinical guidance. A second injury before recovery can increase risk.

Summary

Concussion is a mild traumatic brain injury caused by sudden mechanical force. It can disrupt cognition, balance, emotion, and sleep even without loss of consciousness. Most people recover, although symptoms may persist. Appropriate assessment and gradual return to activity are important.