memai ga hidoi node, shibaraku isu ni suwatte yasumimasu.

Because my dizziness is bad, I will sit in a chair and rest for a while.

Breakdown of memai ga hidoi node, shibaraku isu ni suwatte yasumimasu.

• が: subject particle
• 休やすむ: to rest
• に: location particle
• ので: reason particle

Questions & Answers about memai ga hidoi node, shibaraku isu ni suwatte yasumimasu.

Why is が used after めまい instead of は?

In めまいがひどい, が marks めまい as the thing that has the condition ひどい.

So the structure is basically:

• めまい = dizziness
• が = subject marker
• ひどい = severe / bad

This is a very natural way in Japanese to describe symptoms or conditions:

• 頭が痛い = my head hurts / I have a headache
• 気分が悪い = I feel sick
• めまいがひどい = the dizziness is severe

You could use は in some contexts for contrast or topic-marking, but が is the neutral, natural choice here.

What does ひどい mean here?

Here, ひどい means severe, bad, or terrible.

With symptoms, it often means the symptom is strong or serious:

• 咳がひどい = the cough is bad
• 頭痛がひどい = the headache is severe
• めまいがひどい = the dizziness is severe

So it does not mean the dizziness is morally “awful”; it means it is intense or serious.

Why is ので used? What is the difference between ので and から?