23 results
Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
Femoral Cutaneous Nerve ... purely sensory nerve ... lateral inguinal ligament ... pathophysiology #differential ... #diagnosis #signs
Keratoconus: Pathogenesis and Clinical Findings
Genetics
 • Family history of keratoconus
 • Ehlers-Danlos syndrome
 • Down, Turner,
Ehlers-Danlos syndrome ... Turner, Marfan syndromes ... / Symptoms / Complications ... Vision Loss and pain ... pathophysiology #ophthalmology
Orbital Cellulitis: Pathogenesis and Clinical Findings
Definitions:
a. Chemosis: Edema of the bulbar conjunctiva
b. Panopthalmitis: inflammation of all
- Impinges on nerves ... -> Corneal drying ... pathophysiology #ophthalmology ... #diagnosis #signs ... #symptoms
Causes of Hemiplegia - Differential Diagnosis Algorithm
Cerebral Hemisphere (Contralateral motor cortex)
 • Aphasia
 • Apraxia
 •
of Hemiplegia - Differential ... Consciousness • Cranial Nerve ... Brown-Sequard Syndrome ... sensory loss to pain ... #Hemiplegia #Neurology
Blurry Vision - Differential Diagnosis Framework

Anatomical Approach to Eye Disease:
1. Lids/Lashes
2. Extraocular Muscles/Motility
3. Conjunctiva/Sclera
4. Cornea
5. Anterior
Blurry Vision - Differential ... Optic Nerve/Pathway ... Tumor • Optic nerve ... vision • Eye pain ... #diagnosis #ophthalmology
Rare Causes of Abdominal Pain
 • Hereditary Angioneurotic Edema - Recurrent visceral that may by swelling
Median arcuate ligament ... syndrome - Pain ... Abdominal cutaneous nerve ... Positive Carnett's sign ... #differential #
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... • Neurologic ... symptoms suggest ... Functional • Corneal ... Algorithm #Causes #Ophthalmology
Photophobia and Headache - Differential Diagnosis Framework

Why?
• The coexistence of photophobia and headache suggests the potential
hypothalamus, and visual cortex ... - Autonomic symptoms ... meningeal irritation signs ... the trigeminal nerve ... #Neurology
Approach to Headaches - Differential Diagnosis Algorithm

Red flags (PHANTOMS):
 • Pattern change, progressively worse, papilledema
 •
to Headaches - Differential ... papilledema • Horner ... syndrome, history ... ) • Systemic symptoms ... Diagnosis #Algorithm #neurology
Ptosis - Differential Diagnosis Framework

Ptosis (Greek- to fall) Drooping of the upper eyelid that usually results
Ptosis - Differential ... eyelid: • Third nerve ... palsy • Horner ... #Differential # ... Diagnosis #ophthalmology