Swelling on fingers and toes in winter.

Like every winter, i got my fingers and toe swollen ,itched but i ignored it for some time.strangely enough i enjoyed the itching n d process of giving warmth to the infected area from room heater n shrinking toe fingers bcz it unleashed momentary orgasmic pleasure. but from past some days  my index finger of right hand is unusually swollen n become red n stiff...sometimes there is a very smal brownish dot in the Middle of swollen part on fingers in the feet.. I'm facing problem in using pen due to overwhelmingly swollen index finger. Is it chillblins? Will it get cured using hot water n masaage with mustard oil n wearing socks all the time? Ps- i got a cut n subsequent bleeding in the Same  index finger a week ago which i got cured applying band aid on it... Can this be the reason? Pls help.