A routine blood test before a minor surgery. A child who keeps falling sick with fevers that won't settle. A grandfather whose unexplained bruises and exhaustion get blamed on "old age". In each of these scenes, a complete blood count quietly points to something far bigger than expected — leukaemia, a cancer of the blood. India records over one lakh new blood cancer cases every year, and leukaemia is the most common of them, accounting for more than half. Yet because the early signs look like ordinary fatigue, anaemia, or recurrent infection, many cases are caught late. This guide explains what leukaemia is, who is at risk in India, how it is diagnosed, and why outcomes today are far better than most families fear.
What Is Leukaemia? Understanding Blood Cancer
Leukaemia is a cancer of the blood-forming tissue, mainly the bone marrow — the spongy tissue inside your bones where blood cells are made. In leukaemia, the marrow produces large numbers of abnormal white blood cells that do not work properly and crowd out healthy red cells, white cells, and platelets. The result is anaemia (too few red cells), frequent infections (too few working white cells), and easy bleeding or bruising (too few platelets).
Leukaemia is one of three main types of blood cancer, alongside lymphoma (cancer of the lymphatic system) and multiple myeloma (cancer of plasma cells). This guide focuses on leukaemia, the most common in India.
The Four Main Types
Leukaemia is classified by how fast it grows (acute vs chronic) and which cell line it affects (lymphoid vs myeloid):
| Type | Abbreviation | Speed | Most affected |
|---|---|---|---|
| Acute Lymphoblastic Leukaemia | ALL | Fast | Children (commonest childhood cancer) |
| Acute Myeloid Leukaemia | AML | Fast | Adults, rising with age |
| Chronic Lymphocytic Leukaemia | CLL | Slow | Older adults |
| Chronic Myeloid Leukaemia | CML | Slow | Middle-aged adults |
Acute leukaemias progress quickly and need immediate treatment. Chronic leukaemias grow slowly, may cause no symptoms for years, and are sometimes found incidentally on a blood test.
How Common Is Leukaemia in India?
Blood cancers are a growing burden in India. The country records roughly one lakh-plus new blood cancer cases and around 70,000 related deaths each year, and leukaemia makes up the single largest share. Key Indian patterns include:
- ALL is the most common childhood cancer in India, with a peak between ages 2 and 5.
- AML and CLL are rising steadily, partly reflecting an ageing population and better detection.
- CML outcomes have transformed dramatically thanks to targeted tablets (more on this below).
- Many Indian patients reach specialist care late, after the disease has advanced, because early symptoms are mistaken for common infections or nutritional anaemia — both extremely prevalent in India.
This last point matters enormously: a persistent abnormal blood count deserves a proper workup, not just an iron tonic.
Recognising the Symptoms
Leukaemia symptoms come from the marrow being crowded out and from abnormal cells spreading. Watch for a combination of:
- Persistent fatigue and weakness (from anaemia)
- Recurrent or prolonged fevers and infections that don't settle
- Easy bruising, tiny red spots (petechiae), or bleeding gums and nose
- Unexplained weight loss and loss of appetite
- Drenching night sweats
- Swollen, painless lymph nodes in the neck, armpits, or groin
- Bone or joint pain (common in children with ALL)
- A feeling of fullness or a lump in the upper left abdomen (an enlarged spleen)
- Pale skin, breathlessness on mild exertion
No single symptom confirms leukaemia — many are common to ordinary illnesses. But several together, persisting for more than a couple of weeks, should prompt a doctor visit and a blood test. Because anaemia and infection are so common in India, families should be alert when these don't respond to standard treatment. Our iron deficiency and anaemia guide explains how to tell ordinary anaemia from something that needs deeper investigation.
What Causes Leukaemia? Risk Factors
In most cases there is no identifiable cause, and nothing the person did to bring it on. Known risk factors include:
- Genetic conditions such as Down syndrome (increases childhood leukaemia risk)
- Exposure to benzene (found in some industrial settings, solvents, and tobacco smoke)
- High-dose radiation exposure
- Previous chemotherapy or radiotherapy for another cancer
- Smoking, which is linked particularly to AML
- A family history of leukaemia in some cases
Importantly, leukaemia is not contagious — you cannot catch it from or pass it to another person.
Diagnosis: From Blood Test to Bone Marrow
Diagnosis usually begins with a simple, inexpensive test and builds up from there.
Complete Blood Count (CBC)
The CBC is almost always the first clue. It may show abnormal white cell counts (very high or very low), low haemoglobin, and low platelets. A peripheral blood smear — where a drop of blood is examined under the microscope — can reveal immature or abnormal cells called blasts. If you're unsure how to read these numbers, our CBC report guide breaks down each value in plain language.
Bone Marrow Examination
To confirm leukaemia and identify its type, a bone marrow aspiration and biopsy is done — usually from the hip bone under local anaesthesia. It is the definitive test.
Advanced Tests
- Flow cytometry (immunophenotyping) identifies the exact cell type.
- Cytogenetics and molecular tests (such as the BCR-ABL test for CML or FISH/PCR panels) detect specific genetic changes that guide treatment.
- Imaging (ultrasound, CT) checks the spleen, liver, and lymph nodes.
These specialised tests are available at major cancer centres and large pathology chains across India. Because a leukaemia workup generates many reports over time — CBCs, marrow reports, genetic panels — keeping them organised is genuinely useful. Families can upload reports to MedicalVault and use trend analysis to track blood counts across months of treatment in one place.
Treatment in India: Better Than Most Expect
Leukaemia treatment depends entirely on the type, the patient's age, and genetic features. The outlook for several types is far better today than even a decade ago.
Chemotherapy
The mainstay for acute leukaemias (ALL and AML), given in phases — induction (to achieve remission), consolidation, and maintenance — over months to a few years.
Targeted Therapy
One of modern medicine's great success stories: tyrosine kinase inhibitors (TKIs) such as imatinib have turned CML from a fatal disease into a chronic, manageable condition for most patients, often controlled with a daily tablet. Imatinib is available in India both as branded and affordable generic versions, and through some government and charitable access programmes.
Immunotherapy and CAR-T Cell Therapy
Newer treatments harness the immune system to attack cancer cells. CAR-T cell therapy, including India's own indigenously developed version, is now available at select centres for certain relapsed leukaemias and lymphomas — a major milestone for Indian patients.
Bone Marrow (Stem Cell) Transplant
For high-risk or relapsed cases, a stem cell transplant can offer a cure. India has a growing number of transplant centres, and registries like DATRI help match unrelated donors.
Supportive Care
Blood and platelet transfusions, infection prevention, and good nutrition are vital throughout treatment.
Cost and Financial Support in India
Leukaemia treatment can be expensive, but several routes ease the burden. Government schemes like Ayushman Bharat PM-JAY cover cancer treatment for eligible families at empanelled hospitals, and many state governments, the PM's relief fund, and NGOs offer cancer-specific assistance. Generic targeted drugs have made therapies like imatinib far more affordable than they once were. Our Ayushman Bharat PM-JAY guide explains who qualifies and how to use the scheme.
Living With and Beyond Leukaemia
Many patients — especially children with ALL and adults with CML — achieve long-term remission or live normal lives on maintenance treatment. Survivorship care includes regular follow-up blood tests, watching for late effects of treatment, infection precautions, vaccinations as advised, and emotional support for the whole family. Tracking your follow-up counts over time helps you and your haematologist spot any change early.
Frequently Asked Questions
Is leukaemia curable in India? Many types are highly treatable and some are curable. Childhood ALL has high cure rates with modern chemotherapy, CML is well controlled with daily targeted tablets, and stem cell transplant can cure selected cases. Outcomes depend on type, age, and how early it is caught.
What blood test detects leukaemia? A complete blood count (CBC) with a peripheral smear is the first clue. A bone marrow biopsy confirms the diagnosis, and genetic/flow cytometry tests identify the exact type.
Is leukaemia hereditary or contagious? It is not contagious — you cannot catch it. Most cases are not inherited, though a few genetic conditions and a family history can raise risk.
What is the first sign of leukaemia? There is no single first sign. A combination of persistent fatigue, recurrent fever or infection, easy bruising or bleeding, swollen glands, and unexplained weight loss lasting more than a couple of weeks should prompt a blood test.
How much does leukaemia treatment cost in India? Costs vary widely by type and treatment, but Ayushman Bharat PM-JAY, state schemes, affordable generic targeted drugs, and NGO support significantly reduce the burden for eligible families.
Key Takeaways
- Leukaemia is a cancer of the bone marrow and blood, and India's most common blood cancer — with over a lakh new blood cancer cases yearly.
- Early symptoms — fatigue, recurrent fever, easy bruising, weight loss, swollen glands — mimic common illnesses, so persistent or combined symptoms deserve a blood test rather than just an iron tonic.
- A CBC and blood smear raise the first suspicion; a bone marrow biopsy confirms it, and genetic tests guide treatment.
- Outcomes have improved dramatically: targeted tablets for CML, modern chemotherapy for childhood ALL, and CAR-T therapy now available in India mean many patients live long, full lives.
- Ayushman Bharat PM-JAY, state schemes, generics, and NGOs make treatment more affordable than many families fear.
- Leukaemia care generates many reports over months and years — keep CBCs, marrow reports, and genetic panels organised and trackable with MedicalVault so your care team always has the full picture.
If you or a family member has a persistently abnormal blood count or unexplained, combined symptoms, see a doctor or haematologist — do not self-diagnose, and do not delay. Early diagnosis genuinely changes outcomes in leukaemia.