Thumb Pain Treatment I Am Facing A Severe Pain At The Tip Of My Thumb ( Back To Nail)of Left Hand,?

I am facing a severe pain at the tip of my thumb ( back to nail)of left hand,? - thumb pain treatment

The pain may change as the index. Never lifting weights or something. Is there a month. My fingers of his left hand seems to be bluer than the right hand. My age is 23 years. Please do, do what type of doctor / treatment.