Blackouts: Could Gastroenteritis Be the Cause?

Blackouts or temporary vision loss?

Last Saturday and Sunday, and this Monday, I experienced severe diarrhea.
These past few days, when I stand up from bed, I suddenly feel dizzy and see black.
I would like to know if this could be caused by gastroenteritis.
If not, which specialty should I consult? I have a history of hypertension and diabetes, which are well-managed.

nan, 30~39 year old female. Ask Date: 2021/12/16

Dr. Hou Angting reply Family Medicine

Hello, if you are feeling unwell, you can seek evaluation at a family medicine clinic.
If your symptoms worsen, it is advisable to go to the emergency department immediately.
Wishing you good health.

Reply Date: 2021/12/16

More Info

Experiencing sudden blackouts or dizziness, especially after episodes of diarrhea, can indeed be concerning. Gastroenteritis, which is an inflammation of the stomach and intestines, can lead to symptoms such as diarrhea, vomiting, abdominal pain, and sometimes fever. However, the dizziness you are experiencing may not be directly caused by gastroenteritis itself but could be a result of dehydration or electrolyte imbalances that often accompany gastrointestinal illnesses.

When you have diarrhea, your body loses not only water but also essential electrolytes like sodium, potassium, and chloride. This loss can lead to dehydration, which is a common cause of dizziness or lightheadedness. In your case, if you have been experiencing frequent diarrhea over the weekend, it is possible that you may not have been able to maintain adequate hydration, leading to the symptoms you described.

Given your medical history of hypertension and diabetes, it is crucial to monitor your symptoms closely. Both conditions can complicate the situation. For instance, dehydration can lead to a drop in blood pressure, which may cause dizziness. Additionally, if your blood sugar levels are not well-controlled, this could also contribute to feelings of lightheadedness.

Here are some steps you can take to address your symptoms:
1. Hydration: Make sure to drink plenty of fluids. Oral rehydration solutions (ORS) are particularly effective as they contain the right balance of electrolytes and sugars to help replenish what your body has lost. Avoid caffeinated or alcoholic beverages, as they can worsen dehydration.

2. Diet: Once your diarrhea starts to improve, gradually reintroduce bland foods that are easy on the stomach, such as bananas, rice, applesauce, and toast (the BRAT diet). Avoid dairy, fatty, or spicy foods until you feel better.

3. Monitor Symptoms: Keep an eye on your symptoms. If your dizziness persists or worsens, or if you experience additional symptoms such as severe abdominal pain, high fever, or blood in your stool, it is essential to seek medical attention.

4. Consult a Doctor: Given your existing health conditions, it would be wise to consult with a healthcare provider. You may want to see a primary care physician or a gastroenterologist, especially if your symptoms do not improve with home care. They can perform necessary tests, such as blood tests or stool tests, to determine the underlying cause of your symptoms and provide appropriate treatment.

5. Medication Review: If you are taking medications for your hypertension or diabetes, ensure that they are not contributing to your symptoms. Sometimes, adjustments may be needed based on your current health status.

In summary, while gastroenteritis could be a contributing factor to your symptoms, the dizziness you are experiencing may be more related to dehydration or electrolyte imbalance. It is essential to stay hydrated, monitor your symptoms, and consult with a healthcare provider if your condition does not improve or if you have any concerns. Your health is paramount, and addressing these symptoms early can prevent further complications.

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