Anemia.

Overview

Anemia refers to a lower-than-normal level of hemoglobin or healthy red blood cells, reducing oxygen-carrying capacity.

A condition may appear differently between people, so a symptom list alone cannot establish a diagnosis. Age, medical history and other circumstances affect assessment.

Signs and symptoms

Anemia can cause fatigue, weakness, pallor, dizziness, headaches or breathlessness with activity. Some people notice a faster heartbeat. The nature and severity depend on both the hemoglobin level and the cause. Rapid blood loss or pronounced chest symptoms can be an emergency.

Causes and risk factors

Iron deficiency, vitamin deficiencies, blood loss, chronic disease, inherited conditions and other causes are possible.

Risk factors do not guarantee that a person will develop this condition, and a diagnosis can occur even without obvious risk factors.

Diagnosis and tests

A blood count and tests selected according to the history help identify the type and underlying cause.

Tests are chosen for the individual situation. No picture or AI-generated response can confirm this condition.

Care and treatment

Treatment depends on the cause and may include nutritional treatment, medicines or procedures for blood loss.

Treatment plans must consider severity, other illnesses, medication safety and personal preferences. Do not start or change prescribed treatment using this article alone.

Prevention and daily living

The first step is identifying the cause, which may involve nutrition, chronic inflammation or blood loss. Supplements should be chosen according to confirmed deficiencies; taking iron for every form of anemia may be inappropriate.

Individual care plans may differ, particularly in pregnancy, childhood, older age or when other illnesses are present. The linked clinical source provides more context.

When to seek help

Chest pain, fainting, severe breathlessness or rapid deterioration deserves urgent care.

If symptoms are severe, rapidly worsening or you feel unsafe, seek local emergency services. Do not wait for an online reply.

Questions for a clinician

What evidence supports this diagnosis? What tests are necessary? Which treatment options fit my situation? What should I monitor? When should I return or seek urgent help?