Numbness in thumb after workout, is there nerve damage?

Patient : Hi Just wondering if someone could help me About 5 weeks ago I was at the gym and I was doing a dip exercise and when I came of it I knew I'd done something wrong my thumb on my right hand felt numb Decided to leave it thinking that it was nothing and was hoping it went back to normal. After about a week it was still numb so I started to read a few things on the internet about having pins and needles in my thumb. And a lot of answers appeared carpal tunnel and blocking the nerve in the wrist but It was also saying that the fingers would be numb to which they wernt. So anyways thought I had a slight case of this and I decided to buy a wrist brace to keep the wrist straight to see if I could get it back together but to know joy. I then started to notice a rapid change in the strength in my right arm It was very weak Weights that I could comfortably lift I started to struggle with last week I near dropped a 20kg kettlebell on my feet because I couldn't snatch it above my head. So last Wednesday I had enough so I went to the doctor he examined the arm I told him there was no pain it was just weak and a decrease of strength. He told me it wasn't my carpal tunnel but thought I bruised a nerve on the arm just at the wrist and give me tablets just like I thought to myself if it was just bruised the swelling would of went away considering I had this injury for a few weeks before. When he examined the arm he was looking for pain In the arm but there wasn't any. A few days ago I've found the pain in the arm I was leaning on the door frame with the arms holding on and I stretched forward and felt the pain at the top of my arm slightly sore It actually feels like something's outta place and feels like it needs clicked back into It really frustrating because I haven't been able to get proper gym session done in weeks I was considering going to a physio to see if they had any idears about this Could anyone else share some light into please it would be a big help Thanks
Doctor :   Thanks for consulting us. Numbness of the thumb could be due to nerve damage. Pain suggest that there may sprain of the muscle or ligament. Localized weakness or decreased power of one limb usually happens with central nervous system involvement; which seems to be less likely in your case. Everything should be alright with in couple of weeks, but you may require rest to affected limb. It is good idea to consult Physio and seek his advice. If the problem is still persisting, consult Neurologist for further evaluation. Have a great day.

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