Hi i have Sarcoidosis for nearly 4 yrs ,snd lymfodema ofthe lower part of my body ,caused by this ,now i find that my musceals and fingers are gettin painful ,also where i have had a blemish on my shins and some hard red lumps at the beginging of my Sarcoidsis i have 5 dark cerals and not paiful ,and seamed to be getting more what is it is it skin cancer because of Sarcoidsis .