Constant fine twitching in shoulder

[defd2000]

First of all thank you for the response, I started twitching in my legs approximately 4 months ago with some very sharp rapid twitching in my quad, it lasted for a few weeks off and on and have since developed widespread twitching throughout my body. Now I have developed a shoulder twitch that has been fine and constant in the exact same muscle fibre. I have had 2 clinical exams by GP done at the time of my leg twitch, approx 3 months ago, which he indicated with zero assymmetric weakness, did some blood work all came back normal. Called it benign condition probably from stress and anxiety. I have heard that the shoulder is indicative of ALS and also can this thing bounce from my legs and settle into a shoulder muscle if it were ALS?? I have no real weakness as I lifted weights and am a little stronger, can you get stronger and still have ALS and also can anxiety cause the SAME muscle fibre to twitch for weeks on end or could this possibly just be an injury to the motor nerves?? Thanks for the info as I am an extremely anxious 25 y/o male.

[PaulMD]

Hi there.

Twitching may be an initial manifestation of ALS especially if this is becoming progressive and involving other muscle groups.  However, the most common symptom of ALS is still weakness, but this can still develop as the disease progresses.  It is very hard to tell at this point if you indeed have ALS, and these symptoms have other alternative explanations such as stress, and electrolyte imbalances (potassium, magnesium, calcium).  Regards.

[defd2000]

Right but can the twitching go away like it did in my quad and then settle into a shoulder like that? Also I injured my neck when straining felt like a bad stinger/pinched nerve down my neck/shoulderblade on the same side (left) as my twitching on my front deltoid, could this cause some inflammation in that nerve and cause that same twitching in that same muscle fibre? I understand the nerve supply for that arm runs from this area? Thanks!!