leg
* Increasing weakness in the same area
* Clothes fitting differently because a limb has become thinner
Muscle wasting alongside weakness and twitching is one of the neurological patterns clinicians evaluate when considering ALS. ([Mayo Clinic][2])
## 9. Muscle Stiffness
ALS can also cause increased muscle tone or stiffness.
A person may feel that:
* Legs are unusually tight
* Movements are harder to initiate
* Walking feels stiff or awkward
* Muscles jerk unexpectedly
Neurologists refer to this type of increased muscle stiffness as spasticity.
## 10. Changes in Emotional Expression
Some people with ALS develop episodes of laughing or crying that seem exaggerated or inappropriate for the situation.
Mayo Clinic also notes that inappropriate crying, laughing, or yawning may occur in ALS. ([Mayo Clinic][1])
These changes result from neurological effects rather than simply being an emotional reaction to the diagnosis.
## Does ALS Cause Numbness or Loss of Sensation?
Usually, ALS primarily affects **motor
