Itchy nodular over buttocks, hurts sometimes, increases in size with scratching.also having m/l small lesion over thigh itchy, recur on same site?

Perirectal abscess?: You need to have a doctor examine the skin area and treat this appropriately. An abscess is a chronic skin infection that will not improve unless opened with an incision surgically, drained of pus, and treated with antibiotics. A perirectal abscess can be serious if left untreated, may spread and cause septicemia- please have your GP evaluate the area and decide on next steps, immediately