Early symptoms can vary from person to person, but they often include:
- Muscle weakness in one hand, arm, leg, or foot.
- Frequent tripping or falling due to weakness.
- Difficulty with fine motor tasks, such as buttoning a shirt, turning a key, or writing.
- Muscle twitching (fasciculations), especially in the arms, shoulders, tongue, or legs.
- Muscle cramps or stiffness.
- Slurred speech or changes in the voice.
- Difficulty swallowing that gradually worsens.
- Weakness that slowly spreads to other parts of the body over time.
Symptoms that are less typical early in ALS
Early ALS usually does not cause:
- Numbness or loss of sensation.
- Tingling.
- Severe pain as the main symptom.
- Problems with bladder or bowel control.
- Vision loss.
When to seek medical evaluation
See a healthcare professional if you have:
- Persistent, unexplained muscle weakness.
- Progressive difficulty walking or using your hands.
- Ongoing slurred speech or trouble swallowing.
- Muscle twitching along with weakness that is getting worse.
These symptoms can also be caused by many other, often more common and sometimes treatable conditions, such as nerve compression, vitamin deficiencies, thyroid disorders, or other neurological diseases. A healthcare professional can perform an examination and, if needed, order tests such as nerve conduction studies, Electromyography, blood tests, or imaging to determine the cause.
While there is currently no cure for ALS, early diagnosis can help people access treatments, supportive care, rehabilitation, and symptom management that may improve quality of life and, in some cases, slow disease progression.
