Does hypothyroidism cause cold intolerance?

Cold intolerance means feeling unusually cold in situations that other people find comfortable, or needing more layers than before. An underactive thyroid can slow energy use and heat production, often with tiredness, dry skin, constipation, low mood, or difficulty concentrating. Feeling cold can also be linked with anaemia, low body weight, poor circulation, medication effects, or the environment.

Make a routine appointment if the change persists or comes with other symptoms of an underactive thyroid. Your clinician can review your history, medicines, menstrual or dietary concerns, and general health, then decide whether thyroid and other blood tests are suitable. Keep warm safely with layers, warm drinks, and dry clothing; avoid unprotected direct heat.

Seek urgent care for severe drowsiness, confusion, very slow breathing, fainting, chest pain, or difficulty staying awake, particularly during an illness or after prolonged cold exposure. Rapidly worsening symptoms also need prompt assessment. Do not increase thyroid medicine yourself, because the correct dose depends on your clinical assessment.

Ask whether your symptoms fit thyroid disease, which tests could clarify the cause, whether anaemia or medicines should be considered, and how to monitor change after treatment if treatment is prescribed.