I have been having some problems with the tip of my right index finger. Sometimes the slightest touch causes a lot of pain. Sometimes its icy cold to the touch and I feel the cold as well and very painfull when washing with warm water. I would appreciate any help or advice you could give me.

Thank you.

Have you had some sort of trauma/injury to your finger? It could be some sort of nerve damage or severe infection. I'd suggest seeing a doctor to rule that out.