Most common cause of perforation of cartilaginous part of nasal septum -

Ans- D. D>B. Causes of septal perforation can be summarized under the following categories: trauma surgical repeated cautery digital trauma (nose picking) malignant disease malignant tumours non-Hodgkin lymphoma 5 malignant granuloma chronic inflammatory conditions granulomatosis with polyangiitis (Wegener granulomatosis) 5 syphilis tuberculosis sarcoidosis poisons industrial chronic (> 3 months) cocaine use 4 topical corticosteroids topical decongestants idiopathic