The most common form of DN is a length-dependant symmetrical distal axonopathy
that may be relentlessly progressive or may remain stable for years.
 Organophosphate induced delayed polyneuropathy (OPIDP), a sensory-motor distal axonopathy
, usually occurs 1-4 weeks after single or short-term exposures and it may be progressive and severe.
With hind limbs hyperflexion and a abnormal gait because of distal axonopathy
with skeletal muscle denervation and atrophy.