i have a had a small spot on y lower leg about 6 weeks  ago , it has now grown fast into a white dry  lump patch and is itching all the time , it fells now that it is really deep inside of my leg , when i scratch it it flakes ...could this be cancer  or psorisis
Be assured it is not skin cancer. It is likely to be psoriasis or dermatitis. You can apply topical steroid like Mometasone cream (Mo mate)locally twice daily along with oral antihistamines like levocetrizine 5 mg daily for 2 weeks and see the response