Australian Dental Council (ADC) Practice Test

Thyrotoxicosis, a condition resulting from excessive levels of thyroid hormones in the body, presents with a range of symptoms linked to increased metabolic activity. The symptoms commonly associated with this condition include excessive sweating, tremors, and heat intolerance.

Excessive sweating is a result of heightened sympathetic nervous system activity, which causes the body to produce more sweat as it attempts to regulate body temperature. Tremors occur due to increased nerve sensitivity and a hyperactive metabolic state. Heat intolerance is another primary symptom, manifesting as an abnormal sensitivity to heat and an inability to tolerate warm environments due to increased metabolic rates.

In contrast, severe itching is not typically associated with thyrotoxicosis. This symptom is more often linked to skin conditions or allergies rather than the metabolic dysregulation caused by elevated thyroid hormones. Thus, identifying severe itching as not a symptom of thyrotoxicosis aligns with the typical clinical presentation of the condition.