The short answer
Daily life may involve treatment cycles, infection and infusion planning, blood counts, heart monitoring when relevant, response scans, and relapse choices. A written plan can reduce confusion without pretending every day is predictable.
Daily care may involve treatment cycles, infection and infusion planning, blood counts, heart monitoring when relevant, response scans, and relapse choices.
Use the team's exact infection, bleeding, transfusion, and medicine instructions.
Keep blood-product and treatment history available across settings.
Relapse planning should separate what is known now from possibilities that may never be needed.
On this page
Choose how you want to read this
The whole article, with every detail and caution.
This page is for people living with DLBCL and those who care for them. It covers infections, transfusions, how response and relapse are tracked, and getting through treatment day to day.
The simple version
Diffuse large B-cell lymphoma, or DLBCL, is the most common type of non-Hodgkin lymphoma. NCI says it grows quickly in the lymph nodes, and often the spleen, liver, bone marrow or other organs are also affected. Ask your team what your treatment plan and follow-up will look like.
Why infections happen more often
Chemotherapy lowers your blood counts as part of how it works. That raises your infection risk during treatment. DLBCL can also directly affect the bone marrow, spleen or liver. Ask your care team about handwashing, which vaccines are right for you, and when to call about anything that feels off.
Watch for fever
CDC says to call your doctor right away for a temperature of 100.4°F (38°C) or higher, even in the middle of the night, and calls a fever during chemotherapy a medical emergency. CDC says neutropenia often occurs 7 to 12 days after chemotherapy. Your team will tell you when your counts are likely to be lowest.
Low blood counts and transfusions
Chemotherapy can lower red blood cells and platelets as well as white cells. NCI lists a blood transfusion as one possible treatment for anemia. Your team decides whether you need one based on your symptoms and counts. Ask what your team's plan is and what to watch for.
How response is tracked during and after treatment
NCI says you will have follow-up tests or check-ups as you go through treatment. Some tests, such as a PET scan, may be repeated to see how treatment is working. Ask your team when your response will be checked.
How relapse is tracked
Ask your team how often your follow-up visits will be and how long they will continue. Your team watches for new or growing lymph nodes and new symptoms, and may use exams and imaging.
When to get help sooner
- Call 911 or go to the nearest emergency department if you have trouble breathing, chest pain, fainting, black or tarry stool, blood in vomit or vomit that looks like coffee grounds, bleeding that will not stop, a sudden inability to urinate at all, or sudden confusion or being hard to wake.
- Call your care team right away, day or night, if your temperature is 100.4°F (38°C) or higher. Call right away too for chills, a sore throat, mouth sores, burning when you urinate, or redness or swelling where a catheter or port enters your body, even with a normal temperature. If you cannot reach your team, go to an emergency department and say you are on chemotherapy.
- Call your care team right away if you have new shortness of breath, or feel dizzy or faint. For emergencies call 911 or go to the ER.
- Call your care team the same day if you have a lymph node that returns or grows quickly, drenching night sweats, or weight loss you cannot explain. NCI lists fever, drenching night sweats and weight loss as signs of non-Hodgkin lymphoma. If you have a fever while on chemotherapy, call right away, day or night.
Getting through treatment
Ask your team for the full planned schedule up front, so you can see the whole picture, not just the next appointment.
After treatment ends
Once treatment finishes, many people feel a mix of relief and worry. Ask your team what follow-up visits to expect and who to call if you feel worried between visits.
What to ask your team
Ask what your treatment schedule looks like. Ask when your response will be checked. Ask how often you will need follow-up visits once treatment ends, and what would prompt an earlier one.
Sources
- National Cancer Institute — Adult Non-Hodgkin Lymphoma Treatment (PDQ).
- National Cancer Institute — Infection and Neutropenia During Cancer Treatment.
- CDC — Fever and Cancer Treatment.
- CDC — Neutropenia and cancer treatment.
- National Cancer Institute — Anemia and Cancer Treatment.
- MedlinePlus — Breathing difficulties.
Common questions
Can I work or travel?
It depends on treatment, blood counts, infection exposure, transfusion needs, symptoms, and access to urgent care.
When is a transfusion needed?
The team uses symptoms, blood counts, disease, treatment, and individual risks; this page cannot set a threshold.
How should infection risk be handled?
Follow the team's written fever, exposure, food, line, and vaccine instructions for the current treatment phase.
Should relapse be discussed before it happens?
A bounded discussion can clarify monitoring and reduce uncertainty without assuming relapse will occur.
Questions to ask your doctor
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Your next step
Turn this guide into a short list for your care team.
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Get urgent help
Fever of 100.4°F (38°C) or higher during chemo, severe pain, or trouble breathing: call your cancer care team right away, day or night. Call 911 for an emergency.
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Sources last checked: 2026-07-22 what this meansLast updated: 2026-09-29Next planned review: 2027-07-22
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Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes, and this is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source checked — This page was written with AI assistance and then compared with the sources listed on it, looking for statements those sources do not back up. That check is not a sentence-by-sentence record and can miss errors. It is not a medical review, and it does not confirm the page is complete or right for your situation.
Human medical review: not completed. Pages here are not signed off by a clinician before they publish. That is not an oversight we are quietly working around: we restate published guidance and cite it, so the authority belongs to the source rather than to us, and every page names where its claims come from — you can verify us instead of trusting us. Where a volunteer clinician has reviewed a page, their name and credentials appear on it; where no name appears, no clinician has checked it. We are glad to have reviewers and are recruiting them, and we do not hold pages back waiting for one. Use this site to understand your situation and to ask better questions of the people treating you.
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