When you have a few too many drinks, you might expect to wake up with a hangover and have nausea, a headache and extreme thirst. But you might not expect to experience these symptoms — along with ...

Many patients with post-COVID conditions may experience triggering or worsening of symptoms when moving to and/or maintaining an upright posture. This is known as orthostatic intolerance (OI).

Heart palpitations are a common but usually harmless symptom. However, persistent heart palpitations or other severe symptoms, such as chest pain, shortness of breath, or fainting, require prompt ...