Severe cold intolerance: what to know

Feeling cold all the time can occur when the body produces less heat, carries less oxygen, or regulates temperature differently. Possible contributors include anaemia, iron deficiency anaemia, an underactive thyroid, low body weight, poor circulation, some medicines, and prolonged exposure to cold. The symptom alone cannot identify a cause. Clues such as tiredness, pale skin, breathlessness, constipation, dry skin, hair changes, weight change, numbness, or colour change in fingers help guide assessment.

Book a medical appointment if cold intolerance is new, worsening, or affecting daily life. A clinician may review your diet, menstrual or other blood loss, medicines, circulation, and thyroid symptoms, then choose blood tests based on the history and examination. Dress in layers, keep hands and feet dry, eat regular nourishing meals, and warm yourself gradually. Do not start iron or thyroid treatment without confirmation, because unnecessary treatment can cause harm or hide another cause.

Get urgent help for confusion, extreme drowsiness, slurred speech, severe weakness, chest pain, breathlessness at rest, or skin that remains pale, blue, numb, or painful after warming. Sudden one-sided colour or temperature change in a limb also needs prompt assessment. Seek review sooner if cold sensitivity occurs with heavy bleeding, fainting, or rapidly worsening fatigue.

Ask which causes fit your symptoms, whether blood tests are needed, how to manage possible iron deficiency safely, and whether thyroid hormone replacement is appropriate.