Deviated septum is a condition in which the nasal septum that separates your nostrils is displaced on a side rather than staying on the middle. 

In a normal person, the nasal septum stays in the middle of the nose and keeps the nostrils the same size. Therefore, it looks abnormal when a septal deviation occurs and some complications arise. 

The common complications of a septal deviation may include difficulty breathing, snoring, congestion of the nose, etc. 

The diagnosis is symptomatic and can be done at home all by yourself. However, if you are unable to diagnose a septal deviation in your home, you may consult a doctor to get it done. 

Learn More https://learnfromdoctor.com/deviated-septum-self-test/