27 results
Red Eye - Differential Diagnosis
Lids:
 • Stye (a.k.a. hordeolum)
 • Chalazion
 • Blepharitis
 • Periorbital cellulitis
Conjunctiva
hemorrhage • Dry eyes Cornea ... : • Corneal abrasion ... Keratitis (i.e. corneal ... Differential #Diagnosis #table ... #causes #ophthalmology
Xeropthalmia: Pathogenesis and Ocular Manifestations

Decr Visual pigment -> Keratinization, thickening & non-wetting of the conjunctiva
production -> Corneal ... conjunctiva and cornea ... #Xeropthalmia #pathophysiology ... #ophthalmology ... diagnosis #signs #symptoms
A toxidrome is a syndrome (set of symptoms) caused by specific medications or toxins.

There are 5
syndrome (set of symptoms ... ) caused by specific ... Anticholinergic: low potency antipsychotics ... Toxidromes #Comparison #Table
Rapid, increasing signs of extrapyramidal symptoms (EPS) is an important key feature of NMS. EPS, associated
extrapyramidal symptoms ... with conventional antipsychotics ... about 95% of NMS cases ... to produce EPS symptoms ... NeurolepticMalignant #Comparison #Table
Keratoconus: Pathogenesis and Clinical Findings
Genetics
 • Family history of keratoconus
 • Ehlers-Danlos syndrome
 • Down, Turner,
Bilateral, asymmetric corneal ... Keratoconus Signs / Symptoms ... Rizutti's Sign • Corneal ... #Keratoconus #pathophysiology ... #ophthalmology
Hordeolum vs Chalazion

Hordeolum (Stye):
 • Location: Most commonly found at or near an eyelash follicle
 •
eyelash follicle • Cause ... of the lids • Symptoms ... upper lid • Cause ... Diagnosis #Management #Ophthalmology ... Chalazion #Comparison #Table
Orbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Chemosis: Edema of the bulbar conjunctiva
b. Panopthalmitis: inflammation of all
Proptosis -> Exposes cornea ... -> Corneal drying ... Orbital #Cellulitis #pathophysiology ... #ophthalmology ... diagnosis #signs #symptoms
Schizophrenia: Pathogenesis and Symptoms
Increased dopaminergic transmission in mesolimbic projection
-> Dopaminergic neurons here project into the limbic
Pathogenesis and Symptoms ... is thought to cause ... into the cerebral cortex ... is thought to cause ... Schizophrenia #pathophysiology
First Generation Anti-Psychotics: Mechanisms and Side Effects
Typical/Conventional Anti-Psychotics - Examples: Haloperidol, Chlorpromazine

ACh M1 antagonist - Block
arterioles -> less able ... -> Prefrontal Cortex ... Extrapyramidal Symptoms ... , and/or limbs caused ... restlessness #AntiPsychotics
Chronic Hypertensive Retinopathy: Pathogenesis and clinical findings

Ophthalmic Artery Hypertension
Stage 1: Mild/vasoconstrictive
 • Acute and chronic vasospasm
hyalinization causes ... red-brown coloured -> Copper ... #Retinopathy #pathophysiology ... #ophthalmology ... diagnosis #signs #symptoms