What causes weakness in the arms?
I read your question carefully and I understand your concern.
I really do not see many arguments in favor of ALS in your description. Weakness can have many different causes. ALS is not the most frequent one, any brain, spinal cord or peripheral nerve lesion can manifest with weakness.
So while it is true that some attention must be paid to it (a neurological exam and according to the findings if they suggest a central nervous system lesion an MRI or if a peripheral one EMG must be scheduled), I really wouldn't put ALS as the first possibility.
That is also due to one simple reason, your age. While it can occur at different ages, ALS is rarely encountered in someone under 40 years of age. So while possible it would be unlikely.
As for that episode when eating that doesn't sound like a neurological issue, they do not manifest by food going up, neither ALS nor other other neurological conditions.
If there is any other info which might change my judgment I would be happy to know it. Since you mention to have been given gabapentin I suppose you have been seen by a doctor. In that case it might be useful to know his findings on neurological exam (whether true muscle weakness, atrophy, changed reflexes, changes in sensation, fasciculations etc were noted) and tests you've had.
Sorry for answering a little late, your follow-up question came when I just had gone to sleep (time difference) and I couldn't seem to find a free moment today at the hospital.
I am not sure why Gabapentin was prescribed for bursitis really, it is used for neuropathic or chronic pain, for bursitis one uses anti-inflammatory pain killers (and you don't mention pain anyway).
Anyway while I would suggest discussing with your GP the possibility of a neurological consult (to see for the signs and the need for the exams I mentioned above) in the meantime you should feel reassured by the fact that the weakness is in the biceps as usually in ALS the weakness is more pronounced in the distal hand muscles.
As for the food issue from the way you described it it i doesn't seem dysphagia which is the latin word for swallowing difficulties and you say to have been able to swallow alright.
I remain at your disposal for other questions.
Thank you for your kind words!
I really shouldn't have to alleviate those fears. I mean there is really no reason to suspect ALS there. Now that you explain the shoulder and biceps thing better I am really positive about that and I am not even sure you need that neurologist visit anymore. ALS starts with insidious muscle weakness in one extremity, distally in the hand or foot, gradually spreading to other areas over many months.
Now that you explain the type of pain bursitis may be the cause. I still would use anti-inflammatory painkillers like Ibuprofen rather then Gabapentin (unless your GP thought that Gabapentin would help with the anxiety as well).
So I really do not think ALS is in question and I mean that. Let me know if I can further assist you.
Yes it is true, ALS symptoms are slowly progressive, they do not come and go, do not have such fluctuations.
Regarding the rest of your symptoms the shoulder issue as I said bursitis remains well possible. Rest and pain killers are the only treatment for that and it usually improves.
As for the strange sensation in the legs....it is hard to pinpoint the cause since that description is somewhat vague, so without being able to examine you it is hard to say whether there is something abnormal apart from that sensation. But certainly is not something which is encountered in ALS patient, rest assured about that.
I hope to have been of help.
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