Assertion: als's symptom | /r/HasProperty | stiff muscles
Facets:
Source sentences:
text: Such symptoms may include stiff muscles, muscle twitching, finger dexterity, cramps and weakness or wasting of intrinsic hand muscles and a gradual worsening in muscular strength resulting in difficulty in grasping a pen, lifting a cup, change in vocal pitch and others.
text: The earliest symptoms may include twitching, cramping, or stiffness of muscles; muscle weakness affecting an arm or a leg; slurred and strange-sounding nasal speech; or having a difficult time chewing or swallowing.