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I've had a few conflicting results when testing for neuropathy.
Typically a patient is well aware of 10g monofilament, but has Neurothesiometer readings of over 25mV.
This only happens occasionally but is an interesting anomaly.
Your opinions please.

 

Its not an anomaly - they are measurng different things. Typically in DM, vibration sensation is lost first, and is also affected by age.

 

HI Allan ,
Literature shows vibration perception diminishes with age . It is one of the first sensations to disappear in the diabetic foot. Some authors believe the hot-cold differentiation sensation goes first as it is a small fibre sensation. Vibration and pressure sensitivity are controlled by large fibres.
gHicks

 

Vibration

Dear AA Lang

My memory of the significance of vibration was that what you are measureing is the speed of nerve conduction. The Mylin (spelling?) sheaths around the nerve accelerate the conduction speed of the nerve. Demylination is one of the early forms taken by neuropathy. If the oscilations of the tuning fork (or Neurothesiometer if you have the cash) are too close together for the signals to reach the brain as discreet information packets, no vibration will be perceived.

This is a different form of neuropathy than soft touch deficit.

Regards
Robert