I have small fiber neuropathy non length dependent also. Can you tell me how yours started? Mine started when I woke up one morning sudden onset. It was everywhere. Pinpricks. I have read where people have had the shots and then had those symptoms. My shots were in January. I woke up one am in March and mine was full blown on. I have eye pains also. I want to take the flu shot and a booster for Covid but I am worried about it. This is new to me so I am just trying to take it all in. Mine may be idiopathic. I will know soon.