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Signs and Symptoms of Hyperthyroidism

Hyperthyroidism accelerates your body’s metabolism . It is difficult to diagnose as the signs and symptoms are similar to other conditions.

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Compare hypothyroid and hyperthyroid signs and symptoms.



  • Increased sweating
  • Sensation of warmth
  • Oversensitivity to heat
  • Warm, moist palms
  • Palpitations
  • Increased appetite
  • Diarrhoea
  • Weight Loss
  • Dry; thin skin that flushes easily
  • Hair loss
  • Goitre (enlargement of the thyroid gland)
  • Shakiness/trembling
  • Shortness of breath
  • Overactivity
  • Tiredness/exhaustion
  • Increased sex drive
  • Enlargement of breasts in men
  • Pretibial myxedema (red swollen skin on shins and feet)

Menstrual Disorders

  • Cessation of periods (amenorrhoea)
  • Longer or shorter cycle
  • Infertility


  • Weak, less defined muscles (wasting)
  • Loss of muscle strength
  • Aches and pains

Visual Disturbances

  • Staring eyes
  • Conjunctivitis
  • Corneal ulceration
  • Dry/gritty eyes
  • Painful eyes
  • Double vision


  • Mood changes
  • Nervousness
  • Anxiety
  • Excitability
  • Insomnia
  • Racing thoughts
  • Talkativeness

For more information about hyperthyroidism click here

Date updated: 17/06/21 (V1.3)
Review date: 13/06/22

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