When to worry about cold intolerance with hypothyroidism

Thyroid hormones help regulate energy use and heat production. When levels are low, you may feel cold in settings that others find comfortable, alongside tiredness, dry skin, constipation, a hoarse voice, slowed thinking, or changes in weight. Cold intolerance may continue when another cause is present, so the sensation alone cannot confirm that thyroid levels are the reason.

Arrange a routine review if feeling cold is persistent, newly noticeable, or accompanied by symptoms that are returning. Take thyroid medicine consistently and follow instructions about timing with food and other medicines. Use layers, warm drinks, and safe room heating, but do not use intense heat on numb skin. Keep track of symptoms and recent treatment changes for your appointment.

Seek emergency help for confusion, extreme drowsiness, fainting, difficulty breathing, chest pain, or a very slow or irregular heartbeat with severe weakness. Contact a clinician promptly if cold intolerance is rapidly worsening or occurs with marked swelling, inability to stay awake, or a sudden change in general condition.

Ask whether your thyroid blood tests should be checked, whether your dose and medicine timing are suitable, and whether anaemia or circulation problems could contribute. Tell the clinician about missed doses, new medicines, pregnancy, palpitations, swelling, sleepiness, and any change in memory or concentration.