Hey docs I’m a 22 year old male and I’m otherwise healthy but over the last few weeks I’ve noticed that I’m losing muscle definition all over my body like my neck muscles are getting smaller and my collarbone sticks out more especially on my left side. I have slight weakness in my left arm and slight tingling in my legs but no shaking. I did have gastro a week a go so I was thinking it could be Gullian Bare syndrome? But that has even weakness doesn’t it and also tingling which I don’t have? Also I’m having muscle wasting all over my body like in my legs too and idk if that is caused by it? Doctors did urine sample and blood tests and all came back fine also had a basic neurological exam (they tapped me with this metal thing and did a strength test) and I got 5 for strength and didn’t have any hyperflexia but my left arms still feels a little weak like holding my phone. Also have lost 5kgs in like a week even though my diet is healthy and appetite is fine. The doc I spoke to said I can’t lose muscle that quickly so she thinks I’m not losing muscle, is that true? Sometimes I get really overcome with general fatigue especially when my body gets hot and later in the afternoon. That makes me think it could be MS but MS doesn’t cause muscle wasting and atrophy does it?? Correct me if I’m wrong! I’ve got an MRI scheduled for next week. Would that rule out ALS? I calculated the odds and it’s like 1 in 1 million of me having ALS due to my age but you never know?? Also does the onset of muscle atrophy in als happen really quickly like visible muscle wasting in the hands occurring daily? Lastly it’s expensive to go to the doctor in my country and just those simple tests cost $700 and the MRI would be another $600 so like that plays a role too and I’m a student so my parents are paying. They said they don’t want me to have the MRI “cause the other tests came back showing nothing is wrong”. Is that correct? Would MS or ALS show up or there be any hints from a simple neurological exam, chest x Ray and blood test or?? Many thanks in advance docs!