Symptoms: Could It Be Altitude Sickness or Something Else? - Neurology

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Based on the symptoms you've described, it is essential to consider several potential causes for your condition, including altitude sickness, but also other medical issues that may require further investigation.
Altitude sickness, or acute mountain sickness (AMS), typically occurs at elevations above 2,500 meters (about 8,200 feet), but it can occasionally present at lower altitudes, especially if the ascent is rapid or if the individual is not acclimatized. Symptoms of altitude sickness can include headache, nausea, dizziness, fatigue, and in severe cases, confusion or loss of consciousness. However, your symptoms of severe headache, nausea, vomiting, coldness, weakness, and neurological signs such as numbness and visual disturbances suggest that there may be more than just altitude sickness at play.

The fact that you experienced right-sided numbness and visual disturbances raises concerns about possible neurological issues. These symptoms could indicate a transient ischemic attack (TIA) or even a stroke, particularly if they are unilateral (affecting one side of the body). Other possibilities include a migraine with aura, which can cause similar symptoms, or even a more severe condition such as a brain hemorrhage or other intracranial pathology.

Given that your blood tests returned normal but indicated low blood oxygen levels, it is crucial to monitor your oxygen saturation, especially if you are experiencing ongoing symptoms like dizziness. Low oxygen levels can lead to various complications, including cognitive impairment and fatigue, which may explain your confusion and weakness.

Since you mentioned that your symptoms improved after resting, it is possible that they were related to a combination of factors, including exertion, dehydration, or even anxiety during the hike. However, the severity of your symptoms warrants a thorough evaluation.
I recommend the following steps:
1. Follow-Up with a Healthcare Provider: Given the severity of your symptoms, it is essential to follow up with a healthcare provider, preferably a neurologist, to rule out any serious conditions. They may recommend imaging studies, such as a CT scan or MRI, to assess for any structural issues in the brain.

2. Monitor Symptoms: Keep track of any recurring symptoms, including headaches, dizziness, or neurological changes. Note the duration and intensity of these symptoms, as this information will be valuable for your healthcare provider.

3. Consider a Comprehensive Evaluation: A full neurological examination and possibly additional tests, such as an EEG or vascular studies, may be warranted to assess for any underlying conditions that could explain your symptoms.

4. Hydration and Rest: Ensure you stay well-hydrated and rest adequately, especially if you plan to engage in further physical activities at altitude. Gradual acclimatization is key when hiking at higher elevations.

5. Lifestyle Adjustments: If you have a history of migraines or other neurological conditions, discuss with your doctor about preventive measures or medications that may help manage your symptoms during physical exertion.

In conclusion, while altitude sickness could be a contributing factor, the combination of your symptoms suggests that further investigation is necessary to rule out more serious conditions. Please prioritize your health and seek medical attention promptly.