<unk>  loss develops over the distribution of the trigeminal nerve and then spreads to involve the scalp and neck. Ultimately paraesthesiae spreads down to the arms.<unk>  symptoms are followed by<unk>  deficits which also begin in the face.<unk>  manifestations are characterised by weakness, atrophy, cramping and fasciculations. Difficulty swallowing and speaking may also develop. Neurophysiology studies show a generalized<unk><unk>  neuronopathy which is most severe cranially. These features lead FOSMN syndrome to be classed as one of the 'syringomyelia-like' syndromes, a group which also includes Tangier disease.
Facial onset sensory and motor neuropathy
Progressive bulbar palsy
Tropical neuropathy
Multifocal motor neuropathy
Diabetic neuropathy
Subacute myelo-optic neuropathy
Recurrent painful ophthalmoplegic neuropathy
Acute motor axonal neuropathy