For Patients & General Readers
Iron deficiency anaemia is a common condition where your body doesn't have enough iron to make sufficient red blood cells. This can leave you feeling very tired and weak, and it's most common in women, children, and people with certain medical conditions. It's important to diagnose and treat IDA as it can affect your overall health and energy levels.
Clinical Overview
Iron deficiency anaemia (IDA) is the most common type of anaemia, characterized by a reduced red blood cell mass due to insufficient iron stores. It results from inadequate iron intake, impaired absorption, or chronic blood loss, leading to microcytic, hypochromic red blood cells.
Clinical Presentation
- Gradual onset of fatigue and weakness
- Pallor of skin and mucous membranes
- Exertional dyspnea
- Headaches and dizziness
- Cold extremities
- Pica (craving non-food items like ice or dirt)
Signs & Symptoms
Symptoms (Patient-Reported)
- Extreme tiredness/fatigue
- Weakness
- Shortness of breath
- Pale skin
- Headaches
- Dizziness or lightheadedness
- Cold hands and feet
- Brittle nails
- Sore or swollen tongue
Signs (Clinician-Observed)
- Pallor (conjunctival, palmar creases, skin)
- Tachycardia
- Angular cheilitis
- Koilonychia (spoon-shaped nails)
- Splenomegaly (less common)
Differential Diagnoses
| Condition | Distinguishing Feature |
|---|
| Thalassaemia Trait | Often presents with microcytosis but normal or elevated iron studies, and a family history is common. |
| Anaemia of Chronic Disease (ACD) | Typically normocytic or microcytic, but iron studies show elevated ferritin and low transferrin saturation. |
| Sideroblastic Anaemia | Microcytic anaemia with elevated serum iron and ferritin, and ring sideroblasts on bone marrow aspirate. |
| Lead Poisoning | Can cause microcytic anaemia with basophilic stippling; history of exposure is key. |
| G6PD Deficiency (during haemolytic crisis) | Can present with anaemia and jaundice, but typically normocytic and associated with triggers; G6PD assay is diagnostic. |
Red Flags — Seek Immediate Care
- Sudden onset of severe anaemia
- Evidence of significant gastrointestinal bleeding (melena, hematochezia)
- Unexplained anaemia in a male patient or post-menopausal female
- Rapidly falling haemoglobin levels
- Symptoms suggestive of cardiac compromise (chest pain, severe dyspnea)
Key Investigations
- Complete Blood Count (CBC) with differential (reveals microcytic, hypochromic anaemia: low MCV, MCH, MCHC)
- Iron studies (serum ferritin, serum iron, total iron-binding capacity (TIBC), transferrin saturation)
- Reticulocyte count
- Peripheral blood smear (reveals hypochromia, microcytosis, anisocytosis, poikilocytosis, target cells)
- Fecal Occult Blood Test (FOBT) or Stool DNA test to assess for GI blood loss
- Endoscopy (upper and/or lower) if GI blood loss is suspected
Management Overview
Management focuses on identifying and treating the underlying cause of iron deficiency and replenishing iron stores. Oral or intravenous iron supplementation is the mainstay of therapy. Dietary modifications and addressing malabsorption issues are also crucial components of a comprehensive treatment plan.
Disclaimer: This article is for educational purposes only and does not constitute medical advice.
Always consult a qualified healthcare professional for diagnosis and treatment.
TruelyserMD does not replace clinical judgement.