**Core Concept**
Nasal synechiae, also known as adhesions or septal perforation, are a complication of chronic rhinitis, trauma, or nasal surgery, leading to the formation of fibrotic tissue between the nasal septum and lateral nasal wall, causing nasal obstruction and breathing difficulties. The goal of treatment is to break down these adhesions and restore normal nasal patency.

**Why the Correct Answer is Right**
The treatment of choice for nasal synechiae involves the use of intranasal steroids to reduce inflammation and edema, followed by the use of nasal dilators and humidifiers to maintain nasal patency. However, the most effective treatment for nasal synechiae is the use of **rinsing with saline solution and topical application of mitomycin C**. Mitomycin C is an antineoplastic agent that inhibits fibroblast proliferation and collagen synthesis, thereby preventing the formation of new adhesions.

**Why Each Wrong Option is Incorrect**
**Option A:** **Surgery** may be required in some cases, but it is not the first line of treatment for nasal synechiae.
**Option B:** **Antibiotics** are used to treat infections, not adhesions.
**Option C:** **Topical decongestants** may provide temporary relief but do not address the underlying adhesions.

**Clinical Pearl / High-Yield Fact**
To prevent the formation of nasal synechiae, patients with chronic rhinitis or nasal trauma should use nasal saline irrigations regularly and avoid picking or rubbing their nose.

**Correct Answer: C. Topical application of mitomycin C.**