Anaemia Symptoms: Fatigue and Which Blood Tests Help?

Anaemia means haemoglobin is below the expected range for age and sex. It may cause fatigue, pallor, palpitations and shortness of breath on exertion.

Symptoms, causes and key details

Iron deficiency is common, but low B12 or folate, chronic disease, blood loss and inherited conditions can also contribute. MCV, RDW, ferritin, reticulocytes and the clinical history help distinguish causes.

Assessment and practical next steps

Mention heavy menstrual bleeding, diet, digestive symptoms and medicines. Avoid taking iron indefinitely without identifying the reason.

When is urgent help needed?

Chest pain, fainting, breathlessness at rest or active bleeding require emergency assessment.

Frequently asked question

Is low haemoglobin always caused by iron deficiency?

No; different forms of anaemia require different tests and treatment.

This article provides general information, not a personal diagnosis or treatment.

Trusted information source: https://www.nhs.uk/conditions/iron-deficiency-anaemia/