Allergic sense of smell
Introduction
Introduction Olfactory sensitization is an increase in sensitivity to odor stimuli. It is a clinical manifestation of olfactory disorders. Olfactory disorder refers to the partial, or all, olfactory function decline, loss or abnormality. The olfactory nerve is the nerve fiber of the olfactory epithelium that passes through the sieve plate to the olfactory bulb. The olfactory ability is the characteristic of the olfactory cells in the nasal mucosa. The damage of the nasal mucosa, olfactory bulb, olfactory silk or central nervous system connection may affect the sense of smell. The clinical manifestations are decreased olfactory sensation, olfactory loss, olfactory loss, olfactory inversion, phantom olfactory and olfactory stimuli.
Cause
Cause
The cause of olfactory sensation
(1) Causes of the disease: There is currently no relevant information.
(B) pathogenesis: the molecular biology of olfaction is still unclear. Nasal mucosa, olfactory bulb, and olfactory neuropathy cause decreased or lost olfactory function; and central nervous system joint damage, usually without any detectable loss of olfactory.
Due to the abnormality of the olfactory nerve in the embryonic stage, the olfactory loss occurs.
Examine
an examination
Related inspection
Olfactory nerve examination, nasal olfactory function test, blood routine
Check for olfactory sensation:
1. Cerebrospinal fluid examination.
2. Other necessary selective examination items include: blood routine, blood electrolytes, blood sugar, and urea nitrogen.
3. Bottom of the skull, CT and MRI.
4. Otolaryngology examination and olfactory examination.
5. Other necessary optional auxiliary examination items include chest X-ray and electrocardiogram.
Diagnosis
Differential diagnosis
Symptoms of olfactory susceptibility
(1) olfactory sensation: olfactory damage often manifests as a decrease in sensitivity to olfactory stimuli.
(2) Loss of smell: The severe olfactory damage of the day after tomorrow is manifested by the loss of response to olfactory stimuli.
(3) Lack of smell: Innate olfactory loss, manifested as no response to olfactory scent stimulation.
(4) Olfactory inversion: manifested as a dislocation response to olfactory odor stimulation, but not accompanied by olfactory acute injury.
(5) Fantasy: There is no objective scent irritating stimulus, but the patient smells an unpleasant smell that is difficult to describe.
(6) Olfactory sensation: increased sensitivity to olfactory odor irritation.
