This piercing can sometimes lead to 'septal hematoma' -- an injury to the soft tissue within the septum that can disrupt the blood vessels to cause the accumulation of blood and fluid under the lining. Nasal septum hematoma can eventually cause nasal congestion and interfere with breathing along with causing pain and inflammation. If not treated immediately, the condition can ultimately cause formation of a hole in the septum, leading to nasal congestion. Sometimes, that part of the nose may collapse, resulting in a cosmetic deformity, known as 'saddle nose'.