Over the last month month my right hand middle finger and thumb have had infrequent pain in them mostly at night. they are also warm like there is a fever in them. it feels similar to a sliver that has been stuck in for a few days. the only sensitivity is on the tips of these fingers, and it's a sharp stinging pain whenever that part is touched.  I have never heard of anything like this so any help would be great, it has started moving to my right index finger at well so I'm thinking it might be a circulatory problem. Thanks again for any help