[26F] Experiencing dizziness, vision changes, and headaches with positional changes

What might be happening

Based on your symptoms, several conditions could be considered:

• Postural Orthostatic Tachycardia Syndrome (POTS): This condition is characterized by an excessive increase in heart rate upon standing, and can cause symptoms such as lightheadedness, fainting, rapid heartbeat, and sometimes even shaking. It's often diagnosed with a tilt table test, which you mentioned you've had before.

  • Treatment often involves lifestyle modifications such as increasing fluid and salt intake, and sometimes medications to manage symptoms.

• Vasovagal Syncope: This is a common cause of fainting episodes, often triggered by certain stimuli such as standing for long periods, heat exposure, or sudden emotional distress. The symptoms you described, including lightheadedness, rapid heartbeat, and fainting, are common in this condition.

  • Treatment often involves avoiding known triggers and sometimes medications.

• Neurological conditions: Some neurological conditions can cause symptoms such as muscle spasms, twitching, and changes in vision. However, these would typically be diagnosed with further testing such as an MRI or neurologic examination.

What you can do

1. Try to avoid triggers that you notice make your symptoms worse. This could include standing up too quickly, bending over, or being in hot environments.
2. Stay well-hydrated and consider increasing your salt intake, as this can sometimes help manage symptoms of POTS.
3. Consider seeking a second opinion or further testing if your symptoms continue to be severe and unmanageable.

What you should look out for

Please seek immediate medical attention if you experience:

• Severe chest pain or discomfort
• Trouble breathing
• Sudden numbness or weakness, especially on one side of the body
• Sudden severe headache or confusion
• Any other severe or worsening symptoms

Please remember, while I strive to provide accurate information, I'm an AI and not a doctor. Always consult with a healthcare professional for a formal diagnosis and treatment.