Nerve prblms. Month again pain starts!

Hi I am 36 old.. I had a black spot beside forehead found today.. It is hard and black colour. I dnt feel it is like a mole. Plz let me know what is it. And y it happen so. . My medical history is below Sufferd from tb lymphoneds. 9 month course done . Now cleared.. It's is completed in  may2025. After that I had nerve prblm frm neck to shoulder and then to arm. And numbness in ring and little finger on both hands. And I get pain around ear and then to one side of head.. Seems. Like. Maigraine And saiatic in l4 l5 s1. And sinus too. I had Adinode in nose. And had swollen between index and thumb finger in both hands.. Plz suggest me sir. I tried gabhapantine 300 mg so many months. Until tab usage no pain. After that in one Month again pain starts