Andy,
If you search some of my previous posts, I also have finger weakness. My fingers on my right hand are definitely weak. I cannot grip or push with them like I used to. This does also include my pinky finger. I have had 2 EMG's on this hand and both came out normal. My doctor thinks slight carpal tunnel. Actually, I have to schedule another EMG for this hand again because my neuro wants to keep an eye on it to make sure it does not get worse. But he is not worried about NMD and either am I. I have been cleared with a clean EMG, and so have you. He just wants to make sure my carpal tunnel does not get past the point of no return and I have permanent weakness. There are many things that cause finger weakness, and any nasty disease is very low on that list, especially with your clean EMG. Ulnar nerve entrapement is a primary cause of pinky weakenss and a person can get this just from sleeping on their arm the wrong way.
Also, when my anxiety was at it's highest about 1 1/2 years ago, so was my hand weakness. I don't think it was a coincidence. Therefore, I am a proven fact that anxiety can cause weakness. And as Sue said, she has gone through a very similiar experience. So you are not the only one.
If you search some of my previous posts, I also have finger weakness. My fingers on my right hand are definitely weak. I cannot grip or push with them like I used to. This does also include my pinky finger. I have had 2 EMG's on this hand and both came out normal. My doctor thinks slight carpal tunnel. Actually, I have to schedule another EMG for this hand again because my neuro wants to keep an eye on it to make sure it does not get worse. But he is not worried about NMD and either am I. I have been cleared with a clean EMG, and so have you. He just wants to make sure my carpal tunnel does not get past the point of no return and I have permanent weakness. There are many things that cause finger weakness, and any nasty disease is very low on that list, especially with your clean EMG. Ulnar nerve entrapement is a primary cause of pinky weakenss and a person can get this just from sleeping on their arm the wrong way.
Also, when my anxiety was at it's highest about 1 1/2 years ago, so was my hand weakness. I don't think it was a coincidence. Therefore, I am a proven fact that anxiety can cause weakness. And as Sue said, she has gone through a very similiar experience. So you are not the only one.