About 50% of patients with diabetes mellitus worldwide suffer from diabetic peripheral neuropathy (DPN). The most common form of DPN is a symmetrical, predominantly sensory, polyneuropathy with distal onset and slow proximal progression. However, some patients with diabetes may present with acute or subacute, progressive, asymmetrical weakness and pain of the muscles of the proximal lower limbs. The condition is commonly known as diabetic amyotrophy.