Pearls and oy-sters: carotid dissection with normal arterial lumen.

Pearls & Oy-sters: Vascular EDS presenting with acute proptosis: Always revisit the history.

• The clinical assessment and history should be revisited in order not to miss subtle symptoms such as bruising and thin skin with a visible venous pattern, which may suggest a diagnosis of vEDS. • A clear obstetric history can aid in formulating a diagnosis. • Angiography in patients with vEDS is associated with high morbidity rates secondary to the increased risk of carotid dissection, arteri...

Pearls & Oy-sters: polycythemia vera presenting with ischemic strokes in multiple arterial territories.

Pearls & oy-sters: cerebral venous air embolism after central catheter removal: too much air can kill.

Pearls & Oy-sters: cough headache secondary to Chiari malformation type I.

Pearls & oy-sters: oval pupil: two observations.

The presence of an oval pupil usually localizes the neurologic problem to the midbrain.