I have a dent in my right nostril which is getting worse as the years go on. I had a bang to my nose over 25 years ago (Photo)

Thank you very much for sharing your concerns with us.The harmony between facial parts makes us instinctively recognize the beauty... without knowing it, without defining it, just a perception that surprises and captivates us.In this regard, I suggest perform a Closed Rhinoplasty (without visible scars) to treat the tip, base and nasal bridge.With this procedure you get a delicate nose, better harmonize with your other facial features.Respectfully,Dr. Emmanuel Mallol Cotes.-

Rhinoplasty to address the size and shape of your nose as well as your breathing issues should help you address your concerns. You have to understand that there is no such thing as the “perfect” nose. As rhinoplasty surgeons, we are able to improve the structure and function of the nose to address specific issues you have with how your nose looks and and how well you can breathe. Perfect symmetry does not exist in nature. Attempts to improve the symmetry of your nose should be aimed at achieving an improvement in your asymmetry to the point where it is no longer very noticeable. If you look carefully enough, you will always be able to find imperfections. The goal is a normal looking nose that is in harmony with the rest of your anatomy.

Hi.  It is likely the dent has been pre-existing for a long period of time and is becoming more noticeable as you lose volume in the skin of the nose with time.  This and other aspects of your nose could be corrected with a formal rhinoplasty if it bothers you.  With respect to the nasal breathing it is difficult to say what the exact cause is without an examination.  However it is usually multifactorial and corrected with a septoplasty, bilateral turbinectomy and in your case likely spreader grafts to open the internal valve.  regards

Two options: Non surgical using fillers. Or Surgical using cartilage grafts.................................

The nasal tip is formed by two pairs of cartilages. Normally the lateral wall of the lower lateral cartilage is concave toward the septum. However yours is convex causing not only the dent but can block airflow by narrowing the nasal valve area. It's possible that the injury deviated the septum which could affect the airway. A perforation can come from picking the nose and appears to be causing some loss of support above the nasal tip and tip drop. However there are other systemic conditions that can damage the cartilage such as Wegeners granulomatosis that should be ruled out. Get that evaluated first then discuss your other options such as repairing the septum, fixing the tip cartilages and loss of tip support. Hope that helps. 

It is hard to make a recommendation just from the picture, but there are many options for airway improvement depending on the exact nature of the obstruction. Some of these methods involve cartilage grafting to support nasal soft tissues (internal and external valve defects) and others involve removal of soft or hard tissues from within the nose.  Schedule a consultation with a surgeon certified by the American Board of Plastic Surgery who has a broad experience with rhinoplasty, nasal reconstruction, and airway repair.