Graves disease and thyroid hyperactivity

I appreciate you sharing this text, but I notice you've only provided a headline without the full article structure you mentioned (with lead paragraph marked ▸, bullet lines marked •, and coverage-difference paragraph marked. ).

Here's the translation of the headline:

**Graves' Disease: The Most Common Cause of Hyperthyroidism**

Please share the complete article with its structural markers so I can translate the full content while maintaining the exact format you've specified.