Dysphagia and neck flexor weakness can develop along with respiratory muscle weakness as the disease progresses.
[ncbi.nlm.nih.gov]
Signs and symptoms: Marked weakness in the muscles closest to the center of the body, like the forearms, thighs, hips, shoulders, neck, and back Sometimes, weakness in the
[myositis.org]
Progressive muscle weakness, particularly in the muscles closest to the trunk, such as those in your hips, thighs, shoulders, upper arms and neck.
[biofusioninc.com]