This thread read my mind - I currently have an issue on just 2 fingers (first and pinky), on one hand where the skin is tender and doesnt seem to be healing.
I've never had any issues like this before (infact usually had great skin), have taken some rest due to some tendonosis in my elbow, and tried using/not using moisturiser.
After 2 weeks it did heal up and then I went climbing on snadstone which is far less abbrassive than the normal granite I am used to and the tips flared up again...
If anyone has any advise here I would be very grateful as it is becoming a lil' frustrating!!