Thyroid Symptoms Thyroid Symptoms can include fatigue, weight changes, mood swings, sensitivity to cold or heat, hair loss, dry skin, irregular heartbeat, and difficulty concentrating. These signs may indicate an underactive or overactive thyroid and should be evaluated by a healthcare professional. https://gpnorthbourne.com.au/hidden-in-plain-sight-why-initial-thyroid-symptoms-in-women-are-often-overlooked/