Nasal sounds caused by the inability of the nasal cavity to close

Introduction The so-called openness means that the nasal cavity itself does not suffer from other diseases. When the vocalization needs to close the nasal resonance, it cannot be turned off, but it is still open. The airflow during the vocalization can continuously rush from the throat into the nasal cavity, making the sound It is ambiguous, and it is sometimes difficult to tell what the patient is saying, which is medically called an open nasal sound. The most common are congenital lips, cleft palate (rabbit, wolf pharynx), followed by soft scars or tonsils to form special scars. There are two types of nasal sounds, one is open nasal, such as congenital cleft lip and palate, soft palsy patients, because of the lack of soft palate to seal the nasopharynx; the other is occlusive nasal sounds, such as colds, chronic rhinitis Nasal tumors, etc., due to nasal obstruction caused by the lack of nasal, sinus resonance and nasal sounds; the latter is the most common nasal sound, mostly caused by nasal obstructive diseases.

Cause

Pathological nasal sounds are divided into open nasal and occlusive nasal sounds. When there are diseases such as cleft palate or soft palsy, the soft palate closes the nasopharynx. When the nasal cavity is lost, the relative space and volume are fixed. The nasal resonance is abnormal, and the pronunciation is accurate. It is the pronunciation of some syllables, and there is an open nasal sound and language communication. In contrast to open nasal sounds, the occlusive nasal system is caused by the nasal cavity being occupied by new organisms or causing a decrease in nasal volume. Typical diseases include turbinate hypertrophy during rhinitis, huge nasal polyps, benign lesions such as nasal hemangioma, and nasal sinus malignancies invading the nasal cavity (such as maxillary sinus cancer), and posterior nostril atresia or stenosis is also common.

an examination

Related inspection

Nasal endoscopy, otolaryngology, CT examination

Checking whether the pronunciation is accurate, is the pronunciation of some syllables, "distortion", and the primary disease, etc., can be diagnosed according to clinical symptoms.

Differential diagnosis

Differential diagnosis of nasal sounds caused by the inability of the nasal cavity to close:

Occlusive nasal sound: mainly caused by nasal obstruction, the most common is nasal congestion when a cold, and other such as turbinate hypertrophy, nasal polyps, sinusitis, etc., all the lesions that cause nasal obstruction will cause occlusive nasal sound, this nasal sound As long as the nasal cavity is blocked, the nasal sound can be released.

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