Sudden Dizziness: Causes and Concerns for Teens

Sudden dizziness?

Hello, doctor.
Since elementary school (I am now in high school), I have experienced sudden dizziness, numbness in my hands and feet, and blurred vision whenever I get an injection, have blood drawn, exercise, or stand in the sun for a while.
Eventually, I can’t see, break out in a cold sweat, and sometimes feel like vomiting.
If I don’t sit or lie down to rest immediately, I will faint.
I would like to ask the doctor what might be causing these symptoms.
Thank you! P.S.
I also often experience chest tightness and hand tremors.

Shuan, 10~19 year old female. Ask Date: 2016/04/08

Dr. Gao Chunde reply Neurology

These symptoms are more indicative of syncope, which typically involves a transient decrease in cerebral blood flow, such as a drop in heart rate and blood pressure, especially in response to certain specific stimuli.
This can be related to neurological or cardiac factors.
It is important to schedule an appointment with a physician to establish a diagnosis and learn methods to prevent or reduce the occurrence of these episodes.

Reply Date: 2016/04/08

More Info

Dear Patient,
Thank you for sharing your symptoms and concerns regarding your experiences with sudden dizziness, especially during activities such as getting injections, blood draws, exercising, or standing in the sun. Your symptoms, which include dizziness, tingling in your limbs, blurred vision, cold sweats, and sometimes nausea, can be quite alarming, particularly for a teenager. Let's explore the potential causes and considerations regarding your condition.

Possible Causes of Your Symptoms
1. Vasovagal Syncope: One of the most common causes of dizziness and fainting in young people is vasovagal syncope. This occurs when your body overreacts to certain triggers, such as stress, pain, or prolonged standing. The reaction leads to a sudden drop in heart rate and blood pressure, resulting in reduced blood flow to the brain, which can cause dizziness, sweating, and fainting.

2. Orthostatic Hypotension: This condition occurs when you stand up quickly, causing a sudden drop in blood pressure. It can lead to dizziness and fainting. It is more common in individuals who are dehydrated or have been sitting or lying down for a long time.

3. Dehydration and Electrolyte Imbalance: Especially during hot weather or after intense physical activity, dehydration can lead to dizziness and fainting. Electrolyte imbalances, which can occur with excessive sweating or inadequate fluid intake, may also contribute to your symptoms.

4. Anxiety and Panic Attacks: Anxiety can manifest physically, leading to symptoms such as dizziness, chest tightness, and trembling. If you experience significant stress or anxiety during certain situations, this could be a contributing factor.

5. Cardiovascular Issues: Although less common in teenagers, certain heart conditions can lead to dizziness and fainting. It is essential to rule out any underlying cardiovascular issues, especially if you experience chest pain or persistent symptoms.

Recommendations for Management
1. Stay Hydrated: Ensure you are drinking enough fluids, especially on hot days or when engaging in physical activities. Electrolyte drinks can also be beneficial.

2. Gradual Position Changes: When moving from a sitting or lying position to standing, do so slowly to help your body adjust and prevent sudden drops in blood pressure.

3. Avoid Triggers: If you know certain situations trigger your symptoms (like standing for long periods), try to avoid them or take breaks as needed.

4. Breathing Techniques: If anxiety is a factor, practicing deep breathing or relaxation techniques may help manage your symptoms.

5. Consult a Healthcare Provider: Given the frequency and severity of your symptoms, it is crucial to consult with a healthcare provider. They may recommend tests such as blood pressure monitoring, blood tests, or an electrocardiogram (ECG) to rule out any underlying conditions.

When to Seek Immediate Help
If you experience severe symptoms such as chest pain, prolonged dizziness, or fainting that does not resolve quickly, seek medical attention immediately. It is essential to ensure that there are no serious underlying health issues.

Conclusion
While your symptoms can be distressing, many young people experience similar episodes due to various benign causes. However, it is vital to address these symptoms with a healthcare professional to ensure proper evaluation and management. They can provide personalized advice and treatment options based on your specific situation.

Take care, and don’t hesitate to reach out for help. Your health and well-being are important.

Sincerely,
Doctor Q&A Teams

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