Fainting and Head Injury: Symptoms and Risks - Neurology

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Fainting while standing and hitting the back of the head?


Hello, doctor! A few years ago, I had a drink with friends after a meal, and afterward, I felt dizzy and fainted after urinating in the bathroom, hitting the back of my head (it felt very dizzy and painful, and the impact was likely from falling directly while standing).
I regained consciousness afterward, but experienced severe pain for 1 to 3 hours.
Then, for the next 5 to 10 hours, the pain subsided, but I still felt dizzy and sleepy.
The next day, my condition improved significantly, but for about a week, I experienced mild pain, dizziness, and sleepiness.
By the second week, almost all symptoms had disappeared! This happened about two years ago (at that time, I considered getting checked).
Recently, I came across some media information that made me start to wonder if the impact could have caused any long-term effects.
So, doctor, in this situation, should I get checked, or is it not necessary? (I want to know if there could be any internal bleeding or blood clots.) If it was a concussion, how severe would the symptoms be (mild or moderate)? Is recovery from a concussion just a matter of waiting, or is medication or other measures needed?

ching, 20~29 year old female. Ask Date: 2016/12/10

Dr. Jiang Junyi reply Neurology


Hello, based on your description, generally speaking, in cases of head trauma without post-traumatic amnesia, loss of consciousness, vomiting more than twice, severe headache, post-traumatic seizures, significant subcutaneous hematoma, multiple injuries, penetrating injuries, skull fractures, falls from a height of over one meter, major accidents, a history of coagulopathy, and long-term use of antiplatelet medications, most symptoms tend to be mild.
As a young person, even with mild head trauma, the majority of patients with intracranial bleeding do not require surgical intervention, and the recovery rate is as high as 90%.
Blood clots typically resolve within three months, and since it has been two years, the clot has likely been absorbed.
It is recommended that you consult a neurosurgeon.
Wishing you good health and peace.

Reply Date: 2016/12/10

More Info


Fainting and head injuries can be concerning, especially when symptoms like dizziness, headaches, and excessive sleepiness follow an incident. Based on your description, it seems you experienced a significant head injury after fainting and hitting the back of your head. This type of injury can lead to various complications, including concussions and, in more severe cases, intracranial bleeding.

Understanding the Symptoms:
After a head injury, symptoms can vary widely. Common symptoms of a concussion include:
- Headaches
- Dizziness or balance problems
- Nausea or vomiting
- Sensitivity to light or noise
- Difficulty concentrating or memory issues
- Excessive sleepiness or fatigue
In your case, the initial severe headache followed by dizziness and a desire to sleep for several days suggests that you may have experienced a concussion. The fact that your symptoms gradually improved over the course of a week is a positive sign, but it’s essential to monitor for any lingering effects.

Risks of Intracranial Bleeding:
Intracranial bleeding, such as a subdural hematoma or epidural hematoma, can occur after a head injury. Symptoms of these conditions may not appear immediately and can include:
- Persistent or worsening headaches
- Confusion or changes in consciousness
- Weakness or numbness in limbs
- Seizures
- Clear fluid leaking from the nose or ears (which may indicate cerebrospinal fluid leakage)
Given that you experienced significant pain and dizziness for several hours after the injury, it would have been prudent to seek medical evaluation at that time. However, since it has been two years since the incident and you have not experienced any severe or worsening symptoms since then, the likelihood of having a serious complication such as intracranial bleeding is low.

When to Seek Medical Attention:
If you experience any new or worsening symptoms, such as severe headaches, confusion, or changes in vision, you should seek medical attention immediately. A healthcare provider may recommend imaging studies, such as a CT scan, to rule out any serious complications.

Concussion Management:
If you suspect you had a concussion, the primary treatment is rest. This includes both physical and cognitive rest. Avoid activities that require intense concentration or physical exertion until you feel better. Over-the-counter pain relievers like acetaminophen can help manage headaches, but you should avoid medications like ibuprofen or aspirin immediately after a head injury, as they can increase bleeding risk.

In some cases, healthcare providers may recommend a gradual return to normal activities, including school or work, as symptoms improve. If symptoms persist or interfere with daily life, further evaluation by a neurologist or a concussion specialist may be warranted.

Conclusion:
While your symptoms following the fainting and head injury were concerning, the gradual improvement over time is encouraging. However, it’s always best to err on the side of caution. If you have lingering concerns about potential long-term effects or if new symptoms arise, consider scheduling a visit with a healthcare provider for a thorough evaluation. They can provide personalized advice and determine if any further testing is necessary. Remember, taking care of your brain health is crucial, and being proactive about any symptoms is always a wise choice.

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