background: looking in literature reveals that aging is accompanied by olfactory dysfunction and hyposmia/anosmia is a common manifestation in some neurodegenerative disorders. olfactory dysfunction is regarded as non-motor manifestations of parkinson disease (pd). the main goal of this study was to examine the extent of olfactory dysfunction in persian pd patients. methods: we used seven types...

Objectives Cognition and speech disorders are the most common symptoms of dementia in neurodegenerative disease. Here, we present a detailed clinical evaluation of a case of logopenic variant of primary progressive aphasia (lv-PPA), an atypical form of Alzheimer disease (AD), including cognitive testing over time, brain imaging, electrophysiology, and tests of olfactory function. Case report ...

Chronic rhinosinusitis is the most frequent cause of hyposmia. We established a new experimental animal model to investigate pathological findings in the olfactory epithelium and olfactory bulb of rats and describe the possible etiology of hyposmia due to rhinosinusitis. Not only dysfunction of the olfactory epithelium but a central type of hyposmia caused by disorders of the olfactory bulb was...

INTRODUCTION Phantosmia is the qualitative disorder of olfaction characterized by the perception of odor, usually unpleasant, when there are no odorants present. It may be described as cacosmic (rotten, decayed, fecal), torquosmic (burned, metallic, chemical-like), or mixed. Phantosmia is a relatively uncommon disorder of olfaction and represents around 10% to 20% of olfactory disorders among t...

The most important aims of this thesis were: (1) to investigate the prevalence of olfactory dysfunction in an adult Swedish population and to relate dysfunction to factors of possible impact on olfaction, (2) to present our experience with patients seeking medical attention for olfactory disorders, (3) to describe the relationship between detection and identification tests for olfactory disorde...

An estimated two million Americans suffer from chemosensory disorders. We present the clinical and imaging findings in three hyposmic patients with bilateral olfactory bulb calcification detected by CT. To our knowledge, these are the first cases of olfactory bulb calcification reported in the literature. A review of the literature concerning calcification of cranial nerves, olfactory neuritis,...

Disturbances of olfaction are a common occurrence in many neurological and neurosurgical patients and their correct diagnosis might be helpful in management and enhancement of quality of life. However, olfaction is seldom checked in most neurosurgical units and the "smell bottles" are often either absent or out of date. This chapter reviews systematically recent advances in our understanding of...

background: an important part of one's information from surrounding environment comes through olfactory system. so its disorders regardless of the reason can lead to many problems. an appropriate diagnostic smell test is needed to determine the normal range of olfactory sense, to evaluate patient's complaints and to determine the severity of the problem. it is also helpful in follow- up and cho...