Well-meaning academics even introduced spelling absurdities such as the âsâ in the word âisland,â a misguided Renaissance attempt to restore the etymology of the [unrelated] Latin word insula. 1  A discrete, meaningful unit of language which is approved by some authority.
What is an overactive thyroid? Hyperthyroidism happens when the thyroid becomes overactive and produces too much of its hormones. Hyperthyroidism affects women 10 times more often than men, and is most common in people aged 20-40.
1 Eye problems. 2  In some people with an overactive thyroid gland, eye problems can occur and be quite severe. 3  The most common eye symptom is a retraction of the eyelids that makes the eyes appear to bulge or stare dramatically. 4  Your eyes may also be puffy and watery, and you may experience double vision.5  Hives. The shaking may be subtle, or it could be to the point where you can't steadily carry a drink without spilling it. 2  Diarrhea. 3  An overactive thyroid causes the digestive system to speed up, and this leads to frequent, loose bowel movements. 4  Eye problems.