The causes of a decrease in the Achilles tendon reflex can be:
- spinal muscular atrophy
- neural atrophy of muscles
- Charcot’s disease
- von Eulenburg congenital dystrophy
- circulation disorders
- spinocerebellar heredoattaxia
- inflammation
- spinal cord diseases
- myelitis
- paroxysmal hypocalcemic paralysis
- polyneuropathy
- Guillain-Barré polyradiculitis
- sciatica
- cauda equina syndrome
- Adie syndrome
- radicular syndrome
- dorsal tab
- cancer