Muscle training‐induced bilateral brachial plexopathy in an adolescent with sporadic hereditary neuropathy with liability to pressure palsies

There have been few studies regarding physical training‐induced peripheral nerve dysfunction in patients with hereditary neuropathy with liability to pressure palsies (HNPP), with the exception of soldiers that trained intensively. Here, we report a 15‐year‐old boy without family history of HNPP who developed bilateral painless brachial plexopathy following short‐term barbell and plank training during a school baseball club activity. Muscle training‐induced painless brachial plexopathy could be an initial symptom and may be underdiagnosed in adolescents with sporadic HNPP. [Image: see text]