Unexplained Weight Gain
Unexplained weight gain can have many causes. Learn how hypothyroidism contributes, other possibilities, and when thyroid testing is appropriate.
Learn moreDedicated Thyroid Care
Thyroid Symptoms
Thyroid symptoms are common and non-specific. These guides explain the possible connections — and when testing is worthwhile.
Unexplained Weight Loss
Losing weight without trying can signal hyperthyroidism — but also many other conditions. Causes, red flags, and when to seek evaluation.
Learn moreFatigue and Tiredness
Persistent fatigue has many causes — hypothyroidism is one possibility. Learn the differential, when thyroid testing helps, and other contributors.
Learn moreHair Loss
Thyroid disorders can cause diffuse hair shedding. Learn about telogen effluvium, other causes of hair loss, and what improves after treatment.
Learn moreNeck Swelling
A swelling in the front of the neck may be thyroid-related — goitre, nodules — or something else entirely. How to tell and when to get checked.
Learn moreThyroid-Related Hair Changes
Beyond shedding — hypothyroidism can cause dry, brittle hair and eyebrow thinning. What thyroid-related hair changes look like and how they resolve.
Learn morePalpitations
A racing or irregular heartbeat can be caused by hyperthyroidism — but also anxiety, caffeine, arrhythmias. When thyroid testing is worthwhile.
Learn moreHeat Intolerance
Feeling excessively hot, sweating more, or disliking warm weather can signal hyperthyroidism — but also menopause, medications, and other causes.
Learn moreCold Intolerance
Feeling cold all the time, needing extra layers, cold hands and feet — a classic hypothyroid symptom. Other causes and when to test.
Learn moreIrregular Menstruation
Thyroid disorders can disturb menstrual cycles — heavy, missed or irregular periods. Other causes and when thyroid testing is appropriate.
Learn moreDifficulty Concentrating
Trouble focusing, memory lapses and "brain fog" can occur with thyroid dysfunction — but also stress, sleep problems, and mood disorders.
Learn moreAnxiety and Thyroid Disorders
Hyperthyroidism can mimic anxiety — palpitations, tremor, restlessness. How to distinguish thyroid-related symptoms from anxiety disorders.
Learn moreConstipation
Constipation is a recognised hypothyroid symptom — but also caused by diet, medications, and many other conditions. When thyroid testing is worthwhile.
Learn moreTremors
Fine hand tremors can be caused by hyperthyroidism — but also essential tremor, anxiety, caffeine, and Parkinson’s. How to distinguish and when to test.
Learn moreSleep Disturbances
Thyroid dysfunction can disturb sleep — hyperthyroidism causes insomnia, hypothyroidism causes fatigue. Other causes and when to test.
Learn moreDry Skin and Thyroid Disease
Dry, rough or flaky skin is a common thyroid symptom, especially in hypothyroidism. Why it happens and what helps.
Learn moreMuscle Aches and Weakness
Muscle pain, cramps and weakness can accompany both an under- and overactive thyroid. Why it happens and when to investigate.
Learn moreLow Mood and Depression
An underactive thyroid can cause low mood, and an overactive thyroid can cause anxiety. How thyroid disease and mood are linked.
Learn moreSwollen Legs and Puffy Face
Fluid retention causing puffy eyes, face and swollen legs can be a sign of hypothyroidism. What causes it and when to seek help.
Learn moreDifficulty Swallowing
A large goitre or nodule can press on the swallowing passages. When difficulty swallowing needs urgent assessment.
Learn moreVoice Changes and Hoarseness
A hoarse or changing voice can relate to thyroid enlargement or, after surgery, to the nerve that controls the vocal cords.
Learn moreItchy Skin and Thyroid Disease
Both an under- and overactive thyroid can cause itchy, dry or irritated skin. Why it happens and what can help.
Learn moreMemory Problems and Brain Fog
An underactive thyroid can slow thinking and memory, while an overactive thyroid can cause racing thoughts. How thyroid disease affects cognition.
Learn moreExcessive Sweating
An overactive thyroid commonly causes excessive sweating and heat intolerance. Why it happens and when to investigate.
Learn moreHeavy Menstrual Bleeding
An underactive thyroid can cause heavy or irregular periods. How thyroid disease affects menstruation and what to investigate.
Learn moreEye Bulging (Exophthalmos)
Bulging eyes can be a sign of thyroid eye disease, most often associated with Graves’ disease. When to seek specialist assessment.
Learn moreThyroid Neck Pain
Pain in the thyroid area can come from thyroiditis, a cyst or another neck structure. When neck pain needs prompt assessment.
Learn moreSlow Heart Rate (Bradycardia)
An underactive thyroid can slow the heart rate. When bradycardia is thyroid-related and when it needs separate assessment.
Learn moreReduced Libido
Thyroid disease can affect sex drive through fatigue, mood, hormones and body changes. How thyroid function and libido are linked.
Learn moreFrequently asked questions
Can symptoms alone diagnose thyroid disease?
No — thyroid symptoms overlap with many other conditions. A blood test (TSH ± free T4) is required for diagnosis.
When should I get a thyroid test?
When symptoms are persistent (weeks to months), multiple symptoms cluster, you have risk factors (family history, other autoimmune disease), or symptoms are unexplained.
Do thyroid symptoms always mean thyroid disease?
No — fatigue, weight changes, anxiety and sleep problems have many causes. Thyroid testing is one piece of the diagnostic picture.
Which symptoms most suggest thyroid problems?
No single symptom is specific, but clusters matter — e.g., fatigue + weight gain + cold intolerance suggests hypothyroidism; weight loss + palpitations + heat intolerance suggests hyperthyroidism.
Ready to discuss your thyroid health?
Book a specialist consultation — in person or by teleconsultation.