The accurate diagnosis and characterization of a<unk>  begins with a thorough physical exam to characterize and localize any symptoms to a specific nerve or distribution of nerves. An exam will assess the time course, distribution, and severity and nerve dysfunction as well as whether the disease process involves sensory, motor, or both sensorimotor nerves. After the lesion has been localized, a more focused investigation may use specific techniques appropriate for the involved nerves. Blood tests should be performed to evaluate blood glucose and serum B12 levels with metabolites, additional measurement of specific vitamins or toxins may be performed as indicated if the history and physical exam are consistent. Medical tests which are often useful include: nerve biopsy, MRI, electromography, nerve conduction studies. fundoscopy, and lumbar punctures. However, the diagnosis of many of the disorders associated with<unk>  is a clinical one which does not rely upon any particular diagnostic test.
Neuritis
Myelitis
Arthropathy
Serositis
Polyarthritis
Myelopathy
Urethritis
Phlebitis