Non-Hodgkin's Lymphoma: Symptoms, Causes, and Treatment Options Explained
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: September 2026
TL;DR: Non-Hodgkin's lymphoma is cancer that affects the lymphatic system — the body's germ-fighting network that includes the lymph nodes, spleen, thymus, tonsils, and bone marrow. It is far more common than Hodgkin lymphoma and usually begins in B cells or T cells, the white blood cells that fight infection. Most cases start in B cells, which make antibodies. The disease often begins with painless swollen lymph nodes in the neck, armpits, or groin, plus fatigue, fever, drenching night sweats, and unexplained weight loss. A biopsy is required to confirm the diagnosis and identify the exact type. Treatment is highly individualized and may include watch-and-wait monitoring, chemotherapy, immunotherapy, targeted therapy, CAR-T cell therapy, bone marrow transplant, or radiation — chosen based on the lymphoma's type, stage, and growth speed.
Quick Answer
What it is: Cancer of the lymphatic system — much more common than Hodgkin lymphoma.
How it starts: Usually in B cells (which make antibodies) or, less often, T cells (which kill invaders directly).
Key symptoms: Swollen, often painless lymph nodes in the neck, armpits, or groin; fever; fatigue; drenching night sweats; unexplained weight loss.
Who is at risk: Adults 60 or older, people with a family history of lymphoma, certain infections, and those with weakened immune systems.
How it's diagnosed: Physical exam, blood tests, imaging, and a biopsy — a tissue sample tested for cell markers and DNA changes.
Main treatments: Watch and wait, chemotherapy, immunotherapy, targeted therapy, CAR-T cell therapy, bone marrow transplant, and radiation.
When to act: See a healthcare professional for any symptoms that worry you, especially persistent lumps or unexplained "B symptoms."
What Is Non-Hodgkin's Lymphoma?
Non-Hodgkin's lymphoma is a type of lymphoma — a cancer that affects the lymphatic system. The lymphatic system is part of the body's immune system, the germ-fighting network that protects against infection and disease. It is made up of organs, glands, tube-like vessels, and clusters of white blood cells called lymph nodes.
The system also includes the spleen, thymus, tonsils, adenoids, and bone marrow. Non-Hodgkin's lymphoma can affect all of these areas and, at times, other organs in the body.
It helps to know two things up front. First, non-Hodgkin's lymphoma is much more common than Hodgkin lymphoma, its better-known sibling. Second, there are many types of non-Hodgkin's lymphoma — and the type matters, because treatment depends on where the cancer begins and how it behaves.
Quick definition: Non-Hodgkin's lymphoma is cancer of the lymphatic system. It is the most common lymphoma category, usually beginning in B cells or T cells, and is diagnosed through a biopsy of the affected tissue.
What Are the Symptoms of Non-Hodgkin's Lymphoma?
Symptoms can be easy to miss at first, because many of them look like ordinary illnesses. The table below organizes the signs and what they mean.
Symptom | What It Means |
Swollen lymph nodes (a lump under the skin) | Most often in the neck, armpits, and groin; frequently the first sign |
Belly pain or swelling | Cancer cells building up in abdominal lymph nodes or organs |
Chest pain, coughing, or trouble breathing | Lymph nodes in the chest pressing on airways or lungs |
Fever | Systemic sign that the body is fighting abnormal cells |
Fatigue | Persistent tiredness beyond normal tiredness |
Drenching night sweats | A "B symptom" — a classic sign of lymphoma activity |
Weight loss without trying | A "B symptom" — unexplained loss is a red flag |
Itchy skin | Caused by immune-system activity in the skin |
Skin rash | Can appear in cutaneous (skin) forms of lymphoma |
Drenching night sweats and weight loss that happens without trying are known informally as "B symptoms." When these appear together with swollen nodes, they are worth taking seriously.
When to See a Doctor
Make an appointment with a healthcare professional if you have any symptoms that worry you. A lump that persists, night sweats that soak through bedding, or weight you cannot explain all deserve a proper medical look.
What Causes Non-Hodgkin's Lymphoma?
It is not clear what causes non-Hodgkin's lymphoma. But the mechanism of all cancer is the same: cells develop changes in their DNA — the instruction manual that tells each cell what to do.
In healthy cells, DNA gives instructions to grow and multiply at a set rate, and to die at a set time. In cancer cells, the DNA changes give different instructions. The changes tell cancer cells to make many more cells quickly, and to keep living when healthy cells would die. This causes too many cells.
In non-Hodgkin's lymphoma, the cancer cells often build up in the lymph nodes. They can also build up in other parts of the lymphatic system — the lymph vessels, adenoids, tonsils, spleen, thymus, and bone marrow — and rarely, in parts of the body that are not part of the lymphatic system at all.
What Are the Risk Factors?
Several factors raise the risk, though none guarantees the disease will develop.
Risk Factor | How It Raises Risk |
Older age | Can happen at any age, but most common in people 60 or older |
Family history of lymphoma | A blood relative (parent or sibling) with lymphoma may increase risk |
Certain infections | HIV, Epstein-Barr virus, HTLV-1, and H. pylori have all been linked to it |
Weakened immune system or autoimmune condition | Rheumatoid arthritis, psoriasis, Sjogren syndrome, or a weakened system after organ transplant |
It is important to know: there is no way to prevent non-Hodgkin's lymphoma. Risk awareness helps you act early — not avoid the disease.
How Is Non-Hodgkin's Lymphoma Diagnosed?
Diagnosis usually begins with a physical exam that checks for swollen lymph nodes in the neck, underarms, and groin, and for an enlarged spleen or liver. From there, a series of tests narrows in on a precise answer.
Test | What It Shows |
Blood tests | Whether lymphoma cells are present; virus screening (HIV, hepatitis B, hepatitis C) that may affect treatment options; lactate dehydrogenase (LDH) levels, often higher in lymphoma |
Imaging (MRI, CT, PET scans) | The location and extent of the disease in the body |
Lymph node biopsy | Removes all or part of a lymph node (or other tissue) to look for cancer cells |
Bone marrow biopsy and aspiration | A thin needle draws liquid marrow and a small piece of bone tissue, usually from the back of the hip bone (pelvis) |
Lumbar puncture (spinal tap) | Draws cerebrospinal fluid — the fluid around the brain and spinal cord — to test for cancer cells; done if neurological symptoms exist or central nervous system risk is high |
What Happens in the Lab?
The cells collected from a biopsy or bone marrow procedure go to a lab for specialized testing. Two findings determine your exact diagnosis:
Proteins on the surface of the cancer cells. These proteins, called markers, identify the cell type and help name the lymphoma.
Changes in the cancer cell DNA. Lab tests show which DNA changes are present in the lymphoma cells.
This is why a biopsy is the single most important step: it tells your team exactly which lymphoma you have, and the name determines the treatment.
What Are the Treatment Options?
Which treatment fits you depends on the type of non-Hodgkin's lymphoma, the extent of the cancer (its stage), how fast it is growing, your overall health, and your preferences.
A key concept: lymphomas are either aggressive or indolent. Aggressive lymphomas grow quickly and may cause more symptoms. Indolent lymphomas grow slowly and may not cause symptoms at first — though some indolent lymphomas can change into aggressive ones.
Treatment | How It Works | When It Is Used |
Watch and wait | Checkups every few months to monitor slow growth | Slow-growing lymphoma with no symptoms |
Chemotherapy | Strong medicines, usually through a vein (sometimes pills), that kill fast-growing cells | Often the first treatment; sometimes combined with targeted therapy |
Immunotherapy | Medicine that helps the immune system find and kill cancer cells that have been hiding | Some types; also for refractory (treatment-resistant) or relapsed (returned) lymphoma |
Targeted therapy | Medicines that attack specific chemicals inside cancer cells, blocking them so the cells die | Often combined with chemotherapy; also for some refractory or relapsed cases |
CAR-T cell therapy | Your white blood cells (including T cells) are removed, modified in a lab to recognize lymphoma markers, and returned to hunt the cancer | Some refractory or relapsed cases |
Bone marrow transplant | Healthy bone marrow stem cells replace cells damaged by treatment; from your own body (autologous) or a donor (allogeneic) | Some relapsed or refractory lymphomas, after chemotherapy or radiation suppresses the system |
Radiation therapy | Powerful energy beams (X-rays or protons) directed at precise points in the body | The only treatment if the lymphoma is in one or two slow-growing spots; after chemo to kill remaining cells; or to relieve symptoms |
What Are the Side Effects?
Treatment side effects are common and usually manageable. They may include nausea, vomiting, fatigue, fever, rash, diarrhea, and infection.
More serious side effects deserve close monitoring:
Serious Side Effect | What Happens |
Bone marrow suppression | Not enough blood cells are produced, including white blood cells, raising infection risk |
Febrile neutropenia | Fever combined with low neutrophils (infection-fighting white cells); a serious medical situation |
Medicine toxicity | Some medicines can cause organ damage depending on type and dose |
Reactivating viruses | Past hepatitis B or C infections can become active again, causing liver inflammation and damage |
Tumor lysis syndrome | Rapid breakdown of cancer cells releases substances into the bloodstream that can overwhelm kidneys and other organs |
Infertility | Some lymphoma medicines affect fertility; discuss options before treatment begins |
Can Alternative Therapies Help?
No alternative medicines have been found to cure non-Hodgkin's lymphoma. But they may help you cope with a cancer diagnosis and the side effects of treatment. Options your healthcare team may discuss include art therapy, exercise, meditation, music therapy, relaxation exercises, and spirituality.
How Do You Cope and Prepare?
A diagnosis of any cancer brings uncertainty. Three practical habits help:
Learn enough to make decisions. Ask your team about your test results, treatment options, and prognosis. Knowledge builds confidence in your choices.
Keep friends and family close. Loved ones provide practical support (home help during hospital stays) and emotional support when things feel overwhelming.
Find someone to talk with. A friend, family member, counselor, medical social worker, clergy member, or cancer support group can make a real difference.
Preparing for Your Appointment
If your healthcare professional suspects lymphoma, you may be referred to a hematologist (a doctor who specializes in blood cell diseases) and, if cancer is confirmed, an oncologist (a doctor who treats cancer).
Before the appointment, do five things: ask whether you need to do anything ahead of time, such as restricting your diet; write down all your symptoms, including ones that seem unrelated; write down major stresses or recent life changes; list all medicines, vitamins, and supplements with doses; and bring a family member or friend who can remember details you might miss.
Questions Worth Asking Your Doctor
Question to Ask | Why It Matters |
Do I have non-Hodgkin's lymphoma? | Confirms or rules out the diagnosis |
What type do I have? | Determines the treatment path |
What is the stage? | Shows how far the disease has spread |
Has it spread to other parts of my body? | Guides imaging and treatment planning |
Will I need more tests? | Sets expectations for the workup |
What are the treatment options? | Opens the full menu of choices |
What are the potential side effects of each? | Prepares you for what is coming |
Should I see a specialist? | Ensures the right expertise |
What determines whether I need a follow-up visit? | Clear criteria for next steps |
Conclusion
Non-Hodgkin's lymphoma sounds frightening, and it is serious. But it is also one of the most studied and most treatable forms of cancer, with a wide toolbox of options — from careful watch-and-wait monitoring to cutting-edge CAR-T cell therapy. The single most important thing you can do is pay attention to your body. A lump that does not go away, drenching night sweats, unexplained weight loss, or deep fatigue are not things to brush off.
If you have noticed any of these symptoms, schedule an appointment with a healthcare professional. A biopsy provides the answers your team needs to build the right plan for you.
Frequently Asked Questions
What is the difference between Hodgkin's and non-Hodgkin's lymphoma?
Both are cancers of the lymphatic system. Non-Hodgkin's lymphoma is much more common and includes many types that usually begin in B cells or T cells. Treatment approaches differ based on the specific type.
What are the first symptoms of non-Hodgkin's lymphoma?
Most often, a painless swollen lymph node in the neck, armpit, or groin. Other early signs include fatigue, fever, drenching night sweats, and unexplained weight loss.
Is non-Hodgkin's lymphoma curable?
Treatment outcomes depend on the type and stage. Some lymphomas are cured with treatment; others are managed long-term, much like a chronic condition. Many people respond well to therapy.
Can non-Hodgkin's lymphoma be inherited?
Having a blood relative — a parent or sibling — with lymphoma may increase your risk. That raises risk; it does not mean the disease is directly inherited.
How is non-Hodgkin's lymphoma diagnosed?
Through a combination of a physical exam, blood tests, imaging (MRI, CT, PET scans), and a biopsy. The biopsy is essential: it identifies the lymphoma's cell type and DNA markers, which determine treatment.
What does "watch and wait" mean?
If the lymphoma is slow-growing (indolent) and causing no symptoms, treatment may not be needed right away. Instead, you have checkups every few months while your team watches for changes.
What is CAR-T cell therapy?
A treatment that removes your own white blood cells, engineers them in a lab to recognize lymphoma markers, and returns them to your body to hunt and destroy the cancer cells. It is an option for some refractory or relapsed cases.
Can non-Hodgkin's lymphoma come back after treatment?
Yes. Lymphoma that returns is called relapsed lymphoma; lymphoma that resists treatment is called refractory lymphoma. Both have additional treatment options, including immunotherapy, targeted therapy, CAR-T, and bone marrow transplant.
References
Symptoms & causes of non-Hodgkin's lymphoma — updated Nov. 07, 2025
Diagnosis & treatment of non-Hodgkin's lymphoma — updated Nov. 07, 2025
This article is based on the two references above, both reviewed and current as of November 7, 2025. Always consult a qualified healthcare professional for diagnosis and treatment decisions.
Health information, not medical advice. This article is for general education and is not a substitute for professional diagnosis or treatment. Always consult a qualified healthcare provider about your own health, and seek emergency care for urgent symptoms.
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