Does a concussion cause a fever?

Written by Li Jin Quan
General Surgery
Updated on May 20, 2025
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Concussion is a relatively mild form of traumatic brain injury. The main clinical manifestations are disturbances of consciousness, usually including disturbances such as unconsciousness, but typically not exceeding half an hour. There is also recent memory loss, and the inability to recall the incident causing the injury. Some patients may experience dizziness, headache, nausea, loss of appetite, insomnia, tinnitus, or difficulty concentrating and decreased memory. Additionally, a very small number of concussion patients might experience a low-grade fever.

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Written by Li Jin Quan
General Surgery
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How to deal with a mild concussion?

The treatment mainly includes general management and symptomatic medication. Patients with concussions often experience fear and apprehension. It is beneficial to frequently communicate with patients to maintain a relaxed mood, which aids in recovery from the illness. Early on, it is important to observe changes in the general condition of patients to prevent delayed intracranial hemorrhage. Proper nutrition is also necessary, with a diet that is light and easy to digest. Additionally, patients with mild concussions, who suffer from severe headaches and insomnia, can be treated symptomatically with hypnotic and sedative medications. Oral medications that nourish the nerves can also be administered for treatment.

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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 Jiang Fang Shuai
Neurosurgery
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How to check for a concussion?

How is a concussion diagnosed? In fact, the diagnosis of a concussion is primarily based on clinical manifestations such as a clear history of head trauma, temporary confusion, and retrograde amnesia. Concussions can also undergo some routine examinations, such as CT scans of the head, X-rays of the head, electroencephalography, cerebral blood flow imaging, and cerebrospinal fluid analysis. However, these test results are usually negative, meaning that the diagnosis of a concussion mainly relies on clinical manifestations and there are no effective diagnostic tests.

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Written by Li Jin Quan
General Surgery
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Is a concussion serious?

Concussion is usually a mild condition where the brain has been injured. Clinically, it manifests as temporary disturbances in consciousness, typically not exceeding half an hour. Another symptom is recent memory loss, as the individual cannot recall the events during the injury. There may also be a decrease in blood pressure or pallor at the time of the injury. Following the injury, symptoms such as dizziness, headache, loss of appetite, nausea, memory decline, lack of concentration, or tinnitus can occur. Generally, with 1-2 weeks of treatment, most people can recover from a concussion, so it is not considered a very serious condition.

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Written by Jiang Fang Shuai
Neurosurgery
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Mild concussion sequelae

Mild concussions generally do not have any lasting effects. After a mild concussion, as long as one rests well, maintains a good mindset, and uses medication when necessary, along with symptomatic supportive treatment, the vast majority of people can fully recover within one to two weeks without any lasting effects. Only a few people, due to psychological and mental factors, may continue to experience symptoms that are difficult to improve for more than three months. In these cases, we consider these to be the after-effects of mild concussion, which mainly manifest as headaches, dizziness, dry heaving, vomiting, anxiety, insomnia, lack of concentration, memory decline, slow reactions, irritability, and a bad temper, among others.