What is hyperthyroidism?

Hyperthyroidism is when your thyroid gets too excited and works way too hard.

Imagine your thyroid is like a little engine inside you that helps you grow, stay warm, and feel energized. Normally, it keeps things running smoothly, just like a car’s engine runs at the right speed so you can drive without problems.

When the thyroid gets too excited, it starts going full speed all the time, like a car that won’t stop accelerating. This makes your body feel like it's running on supercharged mode, you might get tired really fast, have trouble sleeping, or even lose weight without trying.

It’s kind of like when you drink way too much soda before bedtime, you can't sit still, you're buzzing with energy, and then you’re exhausted all at once. That's what it feels like to have a hyperthyroid body most of the time.

Sometimes, your thyroid might even work overtime in short bursts, like when you jump up and down for fun and don’t stop until you’re out of breath.