Loss of Smell After Head Injury: When to Seek Medical Attention

Loss of smell after a head injury?

Hello doctor, I fainted and hit the back of my head a week ago.
Two days later, I went to the hospital for an X-ray, and the doctor said there was nothing serious and that I should rest.
However, I have noticed that I can't smell anything, and food tastes bland, similar to when I have a cold.
How long should I monitor these symptoms before seeking medical attention?

Xiao Miao, 20~29 year old female. Ask Date: 2018/07/05

Dr. Zhang Junwei reply Neurosurgery

It is recommended to seek medical examination now, specifically with a neurosurgeon.

Reply Date: 2018/07/05

More Info

Loss of smell, or anosmia, following a head injury can be a concerning symptom that warrants further evaluation. In your case, since you experienced a fall and subsequent head trauma, it is essential to consider the potential implications of your symptoms. Anosmia can occur due to damage to the olfactory nerves, which are responsible for the sense of smell, and this can happen in cases of head trauma, particularly if there is a fracture in the skull or damage to the areas of the brain associated with olfaction.

Given that you had a head injury and are now experiencing a loss of smell, it is advisable to seek medical attention sooner rather than later. While some cases of anosmia may resolve on their own, especially if the injury was mild, the fact that you are experiencing this symptom two days after your injury suggests that it could be related to the trauma. It is important to rule out any serious underlying issues, such as a fracture or damage to the olfactory bulbs, which are located at the base of the frontal lobes.

In terms of when to seek medical attention, if you notice that your sense of smell does not return within a week or if you experience other symptoms such as persistent headaches, dizziness, changes in vision, or any other neurological symptoms, you should definitely return to your healthcare provider. A follow-up evaluation may include imaging studies such as a CT scan or MRI to assess for any structural damage that may not have been evident in your initial examination.

Additionally, if you experience any new symptoms such as nasal discharge, facial pain, or fever, these could indicate a secondary infection or other complications that would require prompt medical evaluation.
In summary, while some cases of loss of smell may improve over time, it is crucial to monitor your symptoms closely. Given the context of your head injury, I recommend that you consult with a healthcare professional as soon as possible to ensure that there are no serious complications and to discuss potential treatment options for your anosmia. Early intervention can be key in managing symptoms and improving outcomes.

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