Symptoms of hyperthyroidism in children include:
Similar to adult symptoms
Declining school performance
Behavior problems
Symptoms of hyperthyroidism in adults include:
Insomnia
Hand tremors
Nervousness
Feeling excessively hot in normal or cold temperatures
Frequent bowel movements
Losing weight despite normal or increased appetite
Excessive sweating
Menstrual period becomes scant, or ceases altogether
Joint pains
Difficulty concentrating
Eyes seem to be enlarging
Symptoms of hyperthyroidism in the elderly may cause:
Worsening of angina (chest pain) in persons with heart disease
Worsening of shortness of breath in persons with heart failure
Muscle weakness, especially in the shoulders and thighs