<s>[INST] my friend has a pimple buttock he goes to the bathroom 3-4 times before he leaves the house some days he smokes and drink like way too much right now hes running a fever 0f 38.3 he wont go to the doctor hes  constantly complaining of back ache this has been going on for about a year + dont know what to do anymore worried he might have cancer in his back. [/INST] Hi, Thanks for writing in. The following features are to be recorded to predict increased chances of your friend having a cancer in his mole.(i) sudden increase in size of the mole beyond 6 mm(ii) if the surface is appearing elevated(iii) irregular margins and borders(iv) any wound or pus formation without signs of acute inflammation(v) sudden growth of a tuft of hair on the mole(vi) sudden change in the color of the motif any of the above features are there in the mole of your friend then please counsel him to visit the dermatologist and get a clinical examination done. If required the doctors will recommend a biopsy. Please do not worry. </s>