Medicated oil, commonly known as "dau gio" in Vietnam, provides only temporary relief for nasal congestion and is not a long-term solution for underlying conditions. If persistent symptoms like those experienced by Kim Ngo occur, seeking a medical consultation is advisable.

Medicated oil typically contains essential oils such as menthol, eucalyptus, cinnamon, cajeput, camphor, basil, and pine, with menthol and methyl salicylate being the most prevalent active compounds. When applied or inhaled, these compounds locally dilate blood vessels, creating a warming sensation on the skin. They also act on the cold-sensitive receptors (TRPM8) in the nasal lining, leading to a temporary feeling of clear airways and easier breathing. However, this sensation is fleeting.

Persistent nasal congestion can stem from various causes beyond allergic rhinitis, including a deviated nasal septum, hypertrophied inferior turbinates, nasal polyps, or chronic sinusitis. Medicated oil does not reduce mucosal swelling or possess anti-inflammatory properties. In these cases, inhaling the oil will only alleviate congestion for a short period without addressing the root cause of the illness.

Doctor Phat is consulting a patient. Illustration: Tam Anh General Clinic District 7.

Additionally, the camphor and menthol components in medicated oil can irritate the respiratory mucosa if used frequently or for extended periods. This can lead to dryness and irritation of the nasal lining, particularly in individuals with sensitive constitutions or those suffering from respiratory conditions such as allergic rhinitis, sinusitis, or asthma.

To help manage symptoms, you can rinse your nose daily with physiological saline solution to thin mucus and reduce mucosal swelling. Warm steam inhalation can also help clear airways and alleviate nasal congestion.

If you experience prolonged nasal congestion that does not improve with allergy medication, or if it is accompanied by facial pain, headaches, a reduced or lost sense of smell, recurrent nosebleeds, or thick, discolored nasal discharge, you should consult an ear, nose, and throat (ENT) specialist. The doctor will perform an examination, including a nasal endoscopy, and may order a CT scan for accurate diagnosis and appropriate treatment.

Master, Doctor, Specialist Level I Truong Tan Phat

Head of ENT Department

Tam Anh General Clinic District 7