How common is dizziness in anaemia?

Anaemia means the blood has reduced capacity to carry oxygen, often because there are too few red blood cells or too little haemoglobin. This may cause lightheadedness, feeling faint, tiredness, breathlessness with activity, headaches, or a racing heartbeat. Symptoms vary with the type and cause of anaemia and how quickly it developed. Dizziness does not by itself show that anaemia is present, so a clinician may ask about bleeding, diet, long-term illness, medicines, and menstrual history before arranging blood tests.

Sit or lie down when dizziness starts, rise slowly, and avoid driving or climbing until your balance is reliable. Drink fluids unless a clinician has restricted them, and keep a record of triggers, duration, breathlessness, paleness, or palpitations. Arrange an appointment if dizziness persists or returns. Do not start iron supplements without advice, because treatment depends on the type and cause of anaemia and excess iron can be harmful.

Seek emergency help for fainting with chest pain, severe breathlessness, confusion, new weakness, trouble speaking, or a very fast or irregular heartbeat. Prompt assessment is also needed for heavy bleeding, black stools, vomiting blood, or dizziness that prevents standing. A clinician should review ongoing dizziness, especially when it is accompanied by marked fatigue or reduced exercise tolerance.

Ask which blood tests are needed, what may be causing the anaemia, and how soon results should be reviewed. Tell the clinician about bleeding, dietary restrictions, pregnancy, bowel symptoms, medicines, and whether dizziness occurs on standing or during exertion.