Hyperthyroidism is a common endocrine disorder that affects the physical and mental health of many people. Hyperthyroidism does not discriminate, although it is predominantly a female condition. Hyperthyroidism can easily be misdiagnosed as other diseases because its symptoms are vague and atypical. Here’s what you need to know. What are the diseases for which hyperthyroidism is easily misdiagnosed? 1, diarrhea There are some hyperthyroid patients, due to increased thyroid function, accelerated intestinal peristalsis, resulting in increased defecation, the patient feels is often diarrhea. 2, heart disease Some patients with hyperthyroidism have heart disease-like manifestations, such as irregular heartbeat and rapid heartbeat, so they are often misdiagnosed as myocarditis, rheumatic heart disease, coronary heart disease and so on. 3, irregular menstruation Hyperthyroidism is easy to be misdiagnosed as which disease? Some hyperthyroidism patients’ reproductive system will be affected, which is manifested as reduced menstrual flow, prolonged cycle or even amenorrhea in women. 4, mental illness Thyroxin is in charge of the central nervous system, thyroxin secretion is too much, the central nervous system is too excited, the patient will be manifested as emotional excitement, irritability, restlessness, insomnia, irritability and so on. 5, eye disease Most hyperthyroid patients will have symptoms of eye protrusion of varying severity, and most of them go to the ophthalmology department first, so it is easy to be misdiagnosed as keratitis or retro-orbital tumor.