What are the primary symptoms of chronic fatigue syndrome?

The primary symptoms of chronic fatigue syndrome (CFS), also known as myalgic encephalomyelitis (ME), include:

1. Persistent fatigue: Lasting exhaustion that interferes with daily life and is not relieved by rest.

2. Post-exertional malaise (PEM): Worsening symptoms after physical or mental exertion, which can last for hours, days, or even weeks.

3. Unrefreshing sleep: Poor sleep quality, duration, or restlessness, which can exacerbate fatigue.

4. Cognitive impairment: Difficulty with:
– Memory (short-term and long-term)