Dizziness: When to Seek Neurological Help - Neurology

"Vertigo"

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Hello, doctor.
I would like to ask about my wife's dizziness issue.
She is 33 years old, and the other day when I picked her up from work, she suddenly felt dizzy, as if everything around her was spinning, and she could barely stand.
I thought, being a woman, anemia is quite common, especially since her menstrual cycle had just ended, so I didn't think it was anything serious.
In the car, she told me that whenever she closed her eyes, it felt like the car was constantly turning left, but when she opened her eyes, the car was moving in a straight line without any turns.
In fact, the car was not turning.
I figured she was genuinely feeling dizzy and uncomfortable, but she didn't seem to think anything was particularly wrong.
When we got home, she said she wanted to take a nap, so I went to the bedroom with her until she fell asleep.
She had experienced nausea a few times before (usually after intense exercise, when she couldn't catch her breath, or during severe coughing).
After lying down and resting on her back, she felt a bit better and no longer felt dizzy or like things were spinning.
I thought that resting and sleeping might help her feel better.
However, when she turned to sleep on her left side, she told me that everything around her started spinning again.
I closely observed her eyes and noticed that her pupils were moving continuously to the right (toward me) and then back to the center.
I asked her to look straight at me, but she said she couldn't keep her gaze steady, and her eyes kept repeating the same movement.
I became anxious and asked her to lie back flat again and stare at the ceiling.
I noticed that her eye movements continued but at a reduced frequency and distance.
After a while, she said she no longer felt dizzy or like things were spinning.
However, when she tried to sleep on her side again, she said the spinning sensation returned, so she was afraid to sleep on her side anymore.
Looking back, when she was in the car, she kept feeling like the car was turning left.
It was nighttime, and since I couldn't get her an appointment right away, and she said she wanted to sleep, I let her rest and decided to observe the situation.
Later that night, I checked on her several times and noticed that even when she turned to sleep on her side, she didn't mention feeling like things were spinning, so I let her rest well.
The next day, when she woke up, she said she felt fine.
Before she went to sleep, I asked her if she had fallen or bumped into anything, or if she felt any other discomfort, and she said no.
I asked if her discomfort could be related to her diet, and she said she hadn't vomited or had diarrhea, although she had experienced mild diarrhea discomfort a couple of days prior.
She had taken pain medication for her menstrual cramps (prescribed by the hospital, one every 12 hours, which she regularly takes during her menstrual cycle) for two days before feeling unwell.
She had also taken cold medicine (prescribed by the hospital, taken after meals, for symptoms like runny nose and cough) for about four to five days prior, and her cold was almost gone.
She mentioned that a colleague at work told her that dizziness could be related to an imbalance of certain substances in the blood and advised her not to drink too much water and to reduce salt intake.
Is this true?
She has a history of drug allergies, so she is always very cautious when seeing doctors and informs them about any medications to avoid potential allergens, as she has never experienced such a situation before.
I am quite worried; she says she no longer feels dizzy and doesn't want to go to the hospital, but I want to insist on having her checked.
If her eye movements are normal at this time, can she still be examined at the hospital? Should we see a neurologist? Please help clarify my concerns.
Thank you very much!

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Jeff, 30~39 year old female. Ask Date: 2001/02/24