What are the first signs of hypothyroidism?

Hypothyroidism occurs when the thyroid does not produce enough hormone for the body's needs. Body processes may slow, leading to fatigue, reduced energy, feeling unusually cold, dry skin, constipation, a slower pulse, or difficulty concentrating. Most people with hypothyroidism notice tiredness, while muscle aches, cramps, or numbness and tingling can also occur. Weight gain may be related to fluid changes, appetite, activity, or other causes and does not prove a thyroid problem. Symptoms often develop gradually and overlap with many common conditions.

Book a GP appointment or Chronic Disease Review if symptoms persist, affect daily life, or occur in several family members. Take a list of medicines and supplements and note changes in energy, bowel habits, temperature sensitivity, skin, mood, and weight. A Thyroid Function Test can help compare thyroid hormone signals and levels. If hypothyroidism is confirmed, Thyroid Hormone Replacement may be discussed; treatment needs an individual dose and follow-up.

Seek urgent help for severe drowsiness, confusion, difficulty breathing, fainting, chest pain, or a major deterioration in your condition. Arrange timely medical review for new weakness, persistent numbness, troublesome muscle cramps, or symptoms that rapidly worsen. Do not alter prescribed thyroid medicine without advice.

Ask which symptoms may be thyroid-related, whether you need thyroid testing, how other medicines affect results, and when to repeat checks. If treatment is offered, ask how to take it, what improvement to expect, and which symptoms should prompt review.