The first test for the diagnosis of Huntington's chorea is a physical examination to locate motor, sensory, neuropsychological, etc. symptoms. In addition, it is essential to know the family history in case there are cases of Huntington's chorea.
If there are suspicions of this pathology, then the specialist will request a CT scan or magnetic resonance imaging (MRI) to visualize the brain and identify possible changes. To confirm the diagnosis, a genetic test is performed on a blood sample. In this way, the patient's DNA is extracted and analyzed to detect the mutation corresponding to Huntington's disease.