Hyperthyroidism or overactive thyroid is a condition in which the thyroid glands overproduce the hormone called thyroxine. It can be serious if you ignore it, but once on a treatment most patients respond well.
Causes:

• Graves’ disease
• Plummer’s disease
• Excess intake of iodine
• Tumour in ovaries
• Thyroiditis

Symptoms:

• Weight loss
• Abnormal heart beat
• Tremor
• Increased sweating
• Fatigue
• Changes in menstrual problems
• Increased sensitivity to heat
• Increased appetite