Symptoms of mild concussion

Written by Li Jin Quan
General Surgery
Updated on May 07, 2025
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A mild concussion primarily refers to a patient experiencing a brief loss of consciousness, generally lasting a few seconds to several minutes. Another symptom that can occur is retrograde amnesia, where the patient is unable to recall details of the incident that caused the injury. Some patients may also experience a drop in blood pressure and appear pale. Additionally, patients may suffer from headaches, dizziness, nausea, loss of appetite, insomnia, tinnitus, decreased memory, and lack of concentration, among other clinical manifestations. Mild concussions typically recover after five to seven days of rest, or symptomatic treatment, with most patients regaining their health.

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Written by Li Jin Quan
General Surgery
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Symptoms of concussion

The primary symptoms of concussion mainly manifest as, initially, disturbances in consciousness such as patient comas, typically lasting no longer than half an hour. The second is recent memory loss, where the patient is unable to recall the circumstances of the injury. At the time of injury, the patient may also appear pale and experience a drop in blood pressure. Post-injury symptoms can include dizziness, headaches, nausea, loss of appetite, poor sleep, reduced memory, lack of concentration, and even tinnitus among various other clinical manifestations.

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Written by Chen Yu Fei
Neurosurgery
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Mild concussion symptoms

For patients with mild concussion, they often experience temporary loss of consciousness after suffering from violent blows, car accidents, falls from heights, and other accidental injuries, generally lasting no longer than 30 minutes. When patients regain consciousness, they may feel headaches, dizziness, nausea, vomiting, and have difficulty accurately recalling the incident, often referred to as retrograde amnesia. For such patients, cranial CT or MRI scans often show no significant positive signs, and it is suggested that no special treatment is necessary. Instead, patients should focus on rest, avoid overworking and exhaustion, and reduce excessive mental stimulation. The symptoms of most patients will gradually alleviate or even disappear within about two weeks.

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Written by Gao Yi Shen
Neurosurgery
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Precursors of concussion

Concussions generally do not have precursors, as they occur immediately after the brain is injured and certain clinical symptoms manifest. There is no concept of a precursor with concussions. The clinical symptoms of a concussion primarily appear after a trauma and include headaches, dizziness, nausea, vomiting, retrograde amnesia, and brief periods of unconsciousness. These symptoms must all be present to classify as related to a concussion. If symptoms are present and a head CT scan shows no significant bleeding, a concussion can generally be diagnosed. Therefore, there is no such thing as precursors, only related clinical manifestations.

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Written by Li Jin Quan
General Surgery
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What should be done for a concussion?

Patients with concussion generally experience fear and anxiety, so it is important to keep them calm and avoid disturbing them as much as possible. Some psychological communication with the patient can help maintain a calm state of mind. Secondly, closely observe the patient's general condition and changes in consciousness to prevent delayed intracranial hemorrhage. Thirdly, administer symptomatic medication as needed, such as pain relievers and sleep aids for symptoms like headache and insomnia. Fourthly, use medications that promote the recovery of nerve cells for treatment.

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Written by Li Jin Quan
General Surgery
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Symptoms of mild concussion

A mild concussion primarily refers to a patient experiencing a brief loss of consciousness, generally lasting a few seconds to several minutes. Another symptom that can occur is retrograde amnesia, where the patient is unable to recall details of the incident that caused the injury. Some patients may also experience a drop in blood pressure and appear pale. Additionally, patients may suffer from headaches, dizziness, nausea, loss of appetite, insomnia, tinnitus, decreased memory, and lack of concentration, among other clinical manifestations. Mild concussions typically recover after five to seven days of rest, or symptomatic treatment, with most patients regaining their health.