Hypothyroidism vs. Hyperthyroidism: A Symptom Checker
Too slow or too fast? Identifying the two extremes of thyroid dysfunction
The thyroid gland regulates your body's metabolism. When it malfunctions, it can either produce too little hormone, slowing everything down, or too much, speeding everything up.
Hypothyroidism (Underactive)
When you lack thyroid hormones, your metabolism crashes. Common symptoms include:
- Unexplained weight gain despite eating less.
- Extreme fatigue and lethargy.
- Feeling unusually cold, even in warm weather.
- Dry skin, brittle nails, and severe hair loss.
- Constipation and depression.
Hyperthyroidism (Overactive)
When your thyroid produces excess hormones, your body is in overdrive. Symptoms include:
- Rapid, unexplained weight loss despite an increased appetite.
- Palpitations, fast heart rate, and hand tremors.
- Feeling constantly hot and sweating excessively.
- Anxiety, irritability, and insomnia.
- Frequent bowel movements.
If you relate to either of these lists, a simple TSH blood test is the first step to diagnosis.