A raised bulge on the nose may be nasal acne, nasal boils or insect bites. 1. Nasal acne: Acne is pimples, papules, pus-filled nodules, cysts and scarring on seborrheic areas. The sebum secretion in the nose is high, and if you don’t pay attention to cleanliness, red pimples, pustules or cysts may appear on the nose due to high androgen levels. 2. Nasal boils: boils are limited purulent inflammation of hair follicles, sebaceous glands and sweat glands, which can form hard nodules with redness, swelling and heat pain. 3. Mosquito bites: after mosquito bites, localized redness and swelling of small red bags, which may be accompanied by itching. When there is a raised bulge on the nose, it is recommended to consult a hospital to clarify the cause of the disease, and then follow the doctor’s instructions for treatment.