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Could POTS and Lyme disease patients suffer impaired cognitive function when standing?

Postural tachycardia syndrome (POTS) is a chronic form of orthostatic intolerance which affects circulation or blood flow. It’s typically triggered when a person suddenly stands up after lying down. The primary symptoms include lightheadedness, fainting and an uncomfortable, rapid increase in heartbeat.

No evidence single doxycycline dosage for Lyme disease prevention is effective in children

A recent article by Carriveau and colleagues recommends that a single dose of doxycycline should be prescribed to children following a tick bite to prevent Lyme disease.¹ Unfortunately, there is no evidence to support this recommendation.