The duration, amplitude, and number of phases of the MUPs are assessed. In myopathic disorders, MUPs are short and of low amplitude, and can also show marked polyphasia owing to reduced ...

Lipodystrophy syndromes are rare diseases originating from a generalized or partial loss of adipose tissue. Adipose tissue dysfunction results from heterogeneous genetic or acquired causes, but leads ...

9 Muscle biopsy performed in the non-acute phase may show increased glycogen content. EMG can be normal or show myopathic features with small, short, polyphasic motor unit action potentials. There is ...

Electromyography is expected to show myopathic features particularly in clinically affected muscles. Testing may show the presence of spontaneous activity such as fibrillation potentials and positive ...