Inflamed Pimple On Nose. Acne on the skin. Image of hygiene greasy blemish - 173270751.

Acne on the skin. Pimples in nose are mostly caused by ingrown hairs. Folliculitis or the inflammation of the hair follicle is the common causes of this pimple.
A pimple inside the nose isnt really dangerous and usually subsides on its own.
In rare cases cavernous sinus thrombosis may occur which can be extremely fatal. It can be extremely dangerous because some of the veins in the nose are connected to the brain. These pimples are constantly getting infections and are likely to linger for years or wont go away without treatment. A pimple causing the nose to swell can be inside the nose or on the nose.