#Clinical_Neurology: Nervous system: 1-CNS ( brain and brainst | sᴘᴏᴛ ᴅɪᴀɢɴᴏsɪs

#Clinical_Neurology:
Nervous system:
1-CNS ( brain and brainstem)
2-PNS ( CN + SN)

Symptoms of CN (Cranial nerves 12) involvement:

#CNI:
1- Anosmia :e.g Common cold,COVID, kallman syndrome.
2-Parosmia: distorted sense of smell.
3- Phantosmia : hallucinations.

#CNII:
1-Visual field defects: e.g. Hemianopia.
2- Color blindness
3- Decrease visual aquity.
4- Visual hallucinations

#CNIII, CNIV, CNVI ( ocular movements) :
1- Diplopia.
2- Ptosis.

#CNV:
1- Facial pain : Trigeminal neuralgia.
2- Shingles.

#CNVII :
1- Asymetrical face
2- Decrease taste in anterior two third of the tounge.
3- Hyperacusis: exaggerated sounds.

#CNVIII:
1- Hearing loss.
2- Tinnitus : ringing echo in ear.
3- Vertigo +/- Vomiting and nausea.

#CNIX, X (glossopharyngeal, vagus nerve):
1- Psedobulbar palsy.
2- Loss of Gag reflux
3- aspiration pneumonia
4- Decrease taste in posterior1/3
5- Dysphonia.

#CNXI (acsessory) :
1- Head drop.

#CNXII (Hypoglossal):
- Tounge deviation, Fasiculation and dysatheria.

#My_Notes