Nazi izimpawu eziyinhloko ye 'hyperthyroidism. Uma i-hyperthyroidism imnene, ingase ingabonakali. Ngaphezu kwalokho, kubantu asebekhulile, izimpawu ngokuvamile azibonakali kahle.

• Ukushaya kwenhliziyo okusheshayo (okuvame ukudlula ukushaya kwe-100 ngomzuzu lapho uphumule) kanye nokushaya kwenhliziyo;
• Ukujuluka ngokweqile, futhi ngezinye izikhathi ukushisa okushisayo;
• Ukundindizela okuhle kwezandla;
• Ubunzima bokulala;
• Ukushintshashintsha kwemizwa;
• Ukuthuthumela;
• Ukunyakaza kwamathumbu njalo;
• Ubuthakathaka bemisipha;
• Ukuphelelwa umoya;
• Ukuncipha kwesisindo naphezu kwesifiso esivamile noma esakhulayo;
• Ushintsho emjikelezweni wokuya esikhathini;
• Ukubonakala kwe-goiter phansi kwentamo;
• Ukukhishwa kwamehlo okungavamile ezisekelweni zawo (i-exophthalmos) namehlo acasukile noma omile, e-Graves' disease;
• Ngokukhethekile, ububomvu nokuvuvukala kwesikhumba semilenze, ku-Graves' disease.