Optional medical device diagnostics – depending on the results of the history, physical examination, laboratory diagnostics, and obligatory medical device diagnostics – for differential diagnostic clarification and in the case of secondary disease
- Abdominal sonography (ultrasound examination of the abdominal organs) – to exclude concomitant diseases.
- Electrocardiogram (ECG; recording of the electrical activity of the heart muscle) – if cardiac involvement is suspected.
- Echocardiography (echo; cardiac ultrasound) – if cardiac involvement is suspected.
- Computed tomography of the skull (cranial CT, cranial CT or cCT) – if neurosyphilis (involvement of the central nervous system) is suspected.
- Magnetic resonance imaging of the skull (cranial MRI, cranial MRI or cMRI) – if neurosyphilis is suspected.
