What should you know about hypo to hyperthyroidism?

Hypothyroidism means the thyroid is producing too little hormone; hyperthyroidism means it is producing too much. Symptoms such as heat intolerance, excessive sweating, palpitations, difficulty sleeping, feeling anxious, diarrhoea, or night sweats can fit an overactive thyroid, but they can also have other causes. A change may reflect thyroid inflammation, an autoimmune process, a dose of thyroid hormone that is too high, or a temporary shift during treatment. Symptoms alone cannot show which explanation applies.

Arrange a medical review and take a list of every thyroid medicine, supplement, and recent dose change. Do not stop or alter prescribed thyroid treatment without advice. The clinician may check thyroid-stimulating hormone and thyroid hormone levels, examine your pulse and neck, and decide whether further tests are needed. Record when symptoms began and whether they follow a dose, illness, or pregnancy-related change. Limit triggers that worsen racing-heart sensations, such as excess caffeine, until you have been assessed.

Seek urgent medical help for chest pain, severe breathlessness, fainting, new confusion, or a very fast or irregular heartbeat. Prompt review is also sensible when symptoms are rapidly worsening, sleep is repeatedly disrupted, or you have persistent vomiting or diarrhoea. These warning signs do not prove a thyroid cause, but they need assessment because several conditions can produce them.

Ask whether your results show an overactive thyroid, whether medicine could be contributing, and when your levels should be rechecked. Ask which symptoms should trigger urgent help and whether you need an endocrinology referral.