Hello, You are having flaking, flat bump on the nose. It can be due to dry skin around your nose that is commonly caused by environmental exposure. To avoid it stay adequately hydrated and avoid exposure directly to the sunlight. Wear a hat or keep your face covered. Skin of the nose can get chapped if you are suffering from allergy, cold, acute sinusitis, etc. Do not keep touching it, keep the skin moist with a herbal based moisturizer. Very dry and flaky skin is indicative of seborrheic dermatitis, rosacea, etc. Avoid using beauty products that can cause drying of the skin. You can apply a thin layer of selenium sulfide, pyrithione zinc ointment on the area affected. You can also use ketoconazole-containing shampoos, topical ketoconazole cream or terbinafine solution for relief. Your symptom should reduce. In case it remains persistent then you should get it clinically examined by a dermatologist. get treated. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician