19 year old young girl with previous history of repeated pain over medial canthus and chronic use of nasal decongestants, presented with abrupt onset of fever with chills & rigor, diplopia on lateral gaze,moderate proptosis & chemosis. On examination optic disc is congested. Most likely diagnosis is
It Stas initially as a unilateral condition which soon becomes bilateral due to intercavernous connection. It should be differentiated from orbital cellulitis and panophthalmitis. Ref: ak khurana 6th edition pg no412
Cavernous sinus thrombosis
Orbital cellulitis
Acute Ethmoidal sinusitis
Orbital apex syndrome
Diseases of orbit, Lids and lacrimal apparatus