Does hyperthyroidism cause feeling anxious?

An overactive thyroid may make the body feel constantly switched on. You might notice inner restlessness, irritability, trembling, a pounding heartbeat, sweating, poor sleep, or difficulty concentrating alongside anxious feelings. The physical sensations can themselves feel alarming. Anxiety can also arise from life stress, medicines, caffeine, panic symptoms, or other medical conditions, so the feeling does not establish a thyroid diagnosis. A clinician can consider the full pattern rather than one symptom.

Reduce caffeine and other stimulants if they worsen shakiness or palpitations, and use slow breathing or a quiet activity to settle your body. Keep a note of triggers, sleep, heartbeat changes, bowel changes, and weight change. Arrange an appointment for an assessment, particularly if anxious feelings are new or persist without a clear trigger. Thyroid blood tests may be used when your symptoms and examination suggest an overactive thyroid.

Seek emergency help for thoughts of harming yourself, chest pain, fainting, severe breathlessness, confusion, or a very fast or irregular heartbeat. Get prompt care for rapidly worsening agitation, high fever, or marked weakness. Arrange routine medical review if anxiety repeatedly disrupts sleep, work, or daily activities, or occurs with tremor, sweating, heat intolerance, diarrhoea, or unexplained weight loss.

Could an overactive thyroid explain both my anxious feelings and physical symptoms? Would thyroid blood tests be useful? Could caffeine, medicines, or another condition be contributing, and what warning signs should I watch for?