Olfactory Nerve and Smell Disorders

  Рет қаралды 3,043

Dr Amr Hassan

Dr Amr Hassan

Күн бұрын

Prevention & Treatment
Health Care
News
Tools & Resources
About Us
More in Brain & Nervous System
Neurological Symptoms & Diagnosis
Cerebral Palsy
Autism
Headaches
View More
Tools & Resources
COVID-19 Vaccine Distribution Tracker
Thyroid Test Analyzer
Doctor Discussion Guides
Hemoglobin A1c Test Analyzer
Lipid Test Analyzer
Complete Blood Count (CBC) Analyzer
Healthy Conversations Coach
Coronavirus vs. Flu
How to Properly Use Hand Sanitizer
Tobacco: New Legal Minimum Age
Best OTC Flu Meds
Who Should Wear Medical Masks?
COVID-19 Timeline
Health A-Z
COVID-19
Arthritis
Type 2 Diabetes
Heart Disease
Digestive Health
Multiple Sclerosis
View All
Prevention & Treatment
COVID-19 Vaccines
Vaccines
First Aid
Surgery
Supplements
Healthy Aging
View All
Health Care
Health Insurance
Public Health
Patient Rights
Health Technology
Caregivers & Loved Ones
End of Life Concerns
View All
News
COVID-19
Health News
View All
About Us
Editorial Process
Privacy Policy
Contact Us
Visit our other Verywell sites:
Verywell Fit
Verywell Mind
Verywell Family
Verywell Health's content is for informational and educational purposes only. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment.
TRUSTe
This website is certified by Health On the Net Foundation. Click to verify.
Ⓒ 2021 About, Inc. (Dotdash) - All rights reserved
Brain & Nervous System
Neurological Symptoms & Diagnosis
Overview and Causes of Olfactory Disorders
By Peter Pressman, MD
Medically reviewed by Shaheen Lakhan, MD, PhD
on January 04, 2020
What are olfactory disorders? What are the causes of dysosmia (a distortion in the sense of smell) and why do they occur? Why is this so important?
Ear nose & throat, woman
BSIP / Getty Images
Olfaction and the Importance of Our Sense of Smell
It would be hard to imagine living life without experiencing the smell of a rose, or the taste of morning coffee. Olfaction, our sense of smell, plays a significant role in almost everyone's life.
Not only does olfaction help us detect fragrances in the air around us, but it's also important in helping us enjoy the flavors of foods. You may have heard that "taste" primarily smells, and that is true to a large degree. A damaged sense of olfaction is severely disrupting: the joy of eating and drinking may be lost, and depression may result. Furthermore, there are dangers associated with the loss of smell, including the inability to detect leaking gas or spoiled food.
More than 2.7 million people in the United States have an olfactory disorder, and this is likely an underestimate. Some people have suggested that about half of people over the age of 60 have a decreased sense of smell.
The Anatomy and Physiology of Olfaction (The Sense of Smell)
In the upper and middle part of the nose, there's a small cell area called the olfactory mucosa. This area secretes several protective substances, like immunoglobulins (antibodies that bind with foreign matter such as microorganisms), in order to prevent pathogens from entering the head. There are also a large number of proteins, called receptors, that capture chemicals in the environment, or odorants. Each receptor is thought to have a special shape that fits these odorants like a key fits a lock.
The olfactory receptors live on an estimated six to ten million olfactory chemoreceptor cells in each nasal cavity.
While the olfactory bulb is commonly considered the “first cranial nerve,” it is technically not a nerve, but part of the brain itself. Signals transmitted from the olfactory bulb travel to special parts of the cerebral cortex and even the amygdala, which is a part of the brain involved with emotion. From the primary olfactory cortex, signals are relayed to other parts of the brain, including the thalamus and hypothalamus.
Smell Disorders
There are several terms that are used to describe the different types of smell disorders. These include:
Dysomia: A distortion of the sense of smell. Dysosmia is in turn broken down into two separate types of smell disorders. Parosmia refers to a change in the perception of an odor. Phantosmia, in contrast, refers to the perception of a smell which is not present. With parosmia, and odor may smell different than it did to you in the past, or you may now find an odor repulsive which you previously enjoyed. With phantosmia, you may, for example, smell a campfire when there is not a campfire present.
Hyposmia: A decreased ability to sense smells
Anosmia: A total inability to smell smells
Causes of Dysomia (A Distortion in the Sense of Smell)
.#د_عمرو_حسن_الحسني #محاضرات_د_عمرو_حسن_الحسني

Пікірлер: 22
@kenzaaznek1608
@kenzaaznek1608 4 ай бұрын
thank uu
@nourelhodaharidy2820
@nourelhodaharidy2820 3 жыл бұрын
Excellent!
@mokalokasoka5163
@mokalokasoka5163 3 жыл бұрын
جازاك الله خيرا دكتور عمرو
@amrhasanneuro
@amrhasanneuro 2 жыл бұрын
جزانا وإياكم وبارك فيكم
@hadizatadez2151
@hadizatadez2151 2 жыл бұрын
أريدكم يا رفاق أن تتغلبوا أيضًا على باروسميا تمامًا كما فعلت ، لقد تلقيت مكملًا عشبيًا من مركز دكتور أوغبيبور للأعشاب على قناته على KZbin ، واستعدت ذوقي ورائحي لذا قررت مشاركة هذا معكم يا رفاق.
@rashaahmadsaeed1217
@rashaahmadsaeed1217 3 жыл бұрын
ربنا يحفظك ويبارك فيك يارب
@amrhasanneuro
@amrhasanneuro 2 жыл бұрын
ربنا يكرمك يارب بكل الخير
@hadizatadez2151
@hadizatadez2151 2 жыл бұрын
أريدكم يا رفاق أن تتغلبوا أيضًا على باروسميا تمامًا كما فعلت ، لقد تلقيت مكملًا عشبيًا من مركز دكتور أوغبيبور للأعشاب على قناته على KZbin ، واستعدت ذوقي ورائحي لذا قررت مشاركة هذا معكم يا رفاق.
@kokyashour
@kokyashour 2 жыл бұрын
ارجوك يا دكتور تتكلم عن تاخر الكلام عند الاطفال اسبابه وعلاجه ودرجات التاخر الذهنى وعلاجه
@hadizatadez2151
@hadizatadez2151 2 жыл бұрын
أريدكم يا رفاق أن تتغلبوا أيضًا على باروسميا تمامًا كما فعلت ، لقد تلقيت مكملًا عشبيًا من مركز دكتور أوغبيبور للأعشاب على قناته على KZbin ، واستعدت ذوقي ورائحي لذا قررت مشاركة هذا معكم يا رفاق.
@emanmohamed4467
@emanmohamed4467 2 жыл бұрын
دكتور لو سمحت ترد عليا دروري عندي اعراض ms لكن الرنين طلعت سليمه الحمد لله اطمن ولا لازم الرنين تكون بالسبغه لان كل تحاليل سليمه لكن الاعراض بتهدي وترجع
@amrhasanneuro
@amrhasanneuro 2 жыл бұрын
السلام عليكم ورحمة الله وبركاته اهلا وسهلا بحضرتك ألف سلامه يمكنك التواصل معي من خلال صفحتي علي الفيس بوك facebook.com/amrhasanneuro حيث يمكنك ارسال رساله بمضمون سؤالك علي بريد الصفحه و سأقوم بنفسي بالرد علي علي سؤال حضرتك شكرا جزيلا لحضرتك
@emanmohamed4467
@emanmohamed4467 2 жыл бұрын
@@amrhasanneuro شكرا لحضرتك علي الرد والاهتمام الله يوفقك ويجبر بخطراك
@hadizatadez2151
@hadizatadez2151 2 жыл бұрын
أريدكم يا رفاق أن تتغلبوا أيضًا على باروسميا تمامًا كما فعلت ، لقد تلقيت مكملًا عشبيًا من مركز دكتور أوغبيبور للأعشاب على قناته على KZbin ، واستعدت ذوقي ورائحي لذا قررت مشاركة هذا معكم يا رفاق.
@mariamtarek6218
@mariamtarek6218 3 жыл бұрын
السلام عليكم دكتور لو سمحت أنا كنت تواصلت مع حضرتك عشان كان بيجيلي صداع نصفي فى أيام معينه فى الشهر و حضرتك شخصته شقيقة و كتبلتيلى كورس علاجي امشي عليه ٣ شهور جاب معايا نتيجه فى الاول و خلى حده الصداع أقل الوقتى بقي يرجع الصداع زى الاول و فى اى وقت عادى مش وقت معين و انا فاضلى ٣ ايام و اخلص الثلاث شهور و يخلص الدوا و حضرتك قولتلى اول ما الدوا يخلص اكلم حضرتك و تواصل مع حضرتك على الصفحة الشخصيه على الفيس من عشر ايام بحاول مفيش رد خالص عشان اوصل لحضرتك إن مشكله الصداع لسه مستمره و جزاك الله كل خير يا دكتور
@amrhasanneuro
@amrhasanneuro 2 жыл бұрын
وعليكم السلام ورحمة الله وبركاته أهلا وسهلا بحضرتك نعتذر عن التأخر في الرد يوجد مئات الرسائل يتم الرد عليها يوميا برجاء اعادة ارسال رسالتك مره أخري وصورة الروشته الأخيرة
@mariamtarek6218
@mariamtarek6218 2 жыл бұрын
@@amrhasanneuro متشكره جدا على رد حضرتك يا دكتور أنا بعت لحضرتك تانى على الماسنجر امبارح ربنا يعينكم و شكرا جدا على الاهتمام بالرد
@hadizatadez2151
@hadizatadez2151 2 жыл бұрын
أريدكم يا رفاق أن تتغلبوا أيضًا على باروسميا تمامًا كما فعلت ، لقد تلقيت مكملًا عشبيًا من مركز دكتور أوغبيبور للأعشاب على قناته على KZbin ، واستعدت ذوقي ورائحي لذا قررت مشاركة هذا معكم يا رفاق.
Vagal Nerve Stimulation-أ.د.عمروحسن الحسني
33:32
Dr Amr Hassan
Рет қаралды 1 М.
Neurology | Olfactory Nerve: Cranial Nerve I
37:51
Ninja Nerd
Рет қаралды 428 М.
Gym belt !! 😂😂  @kauermtt
00:10
Tibo InShape
Рет қаралды 9 МЛН
New model rc bird unboxing and testing
00:10
Ruhul Shorts
Рет қаралды 23 МЛН
Cat Corn?! 🙀 #cat #cute #catlover
00:54
Stocat
Рет қаралды 16 МЛН
KINDNESS ALWAYS COME BACK
00:59
dednahype
Рет қаралды 164 МЛН
Smell Disorders
28:10
Yasser Nour Otolaryngology knowlege with no limits
Рет қаралды 510
Smell Disorders: Why and What To Do
27:05
I CARE FOR YOUR BRAIN with DR. SULLIVAN
Рет қаралды 1,7 М.
Physiology of Taste  -  Special Senses
5:46
Dr. Islam Menshawy
Рет қаралды 4,1 М.
How Do We Smell?
4:48
Neuro Transmissions
Рет қаралды 28 М.
Gym belt !! 😂😂  @kauermtt
00:10
Tibo InShape
Рет қаралды 9 МЛН