Symptoms That Could Indicate Hyperthyroidism

17. Increased Frequency of Urination

Hyperthyroidism can speed up every system in the body—including the kidneys. This can lead to more frequent urination, especially at night. While it’s easy to blame this symptom on hydration or aging, increased urine output (sometimes coupled with a heightened thirst) may signal a hormonal imbalance. In more severe cases, this can contribute to dehydration, fatigue, and electrolyte imbalances—especially if you're also sweating excessively.

18. Skin That Feels Warm and Moist

An overactive thyroid pumps up the body’s metabolic engine, raising internal temperature and increasing blood flow to the skin. This often results in warm, moist skin—even in cool environments. Some patients describe their skin as constantly “clammy” or flushed, especially on the palms of the hands or soles of the feet. This symptom may be accompanied by increased sensitivity to fabrics or skin irritation due to frequent sweating.