Tachycardia

Symptoms

Some people with tachycardia have no symptoms and are unaware of their condition until it is discovered incidentally by their doctor during a physical examination.

Tachycardia may result in these signs or symptoms:

• Dizziness
• Clamminess
• Shortness of breath
• Light-headedness
• Rapid heartbeat
• Chest pain
• Palpitations, sensations of a racing, uncomfortable, irregular heartbeat or a flopping in the chest
• Blackouts
• Visual problems
• Fainting (syncope)

Tachycardia may occur infrequently (paroxysmal tachycardia). Symptoms may come and go, lasting for a few minutes to hours and then stopping on their own. Chronic tachycardia occurs when symptoms last until they're treated medically.