Cancer-related fatigue: not ordinary tiredness.

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“I’m just really tired.”

She says it quietly, almost apologetically, while I’m flushing her port. If I’m not careful, I could nod and say, “That’s common,” and move on. But over time, I’ve learned that when a patient says “tired,” they’re often describing something much bigger.

Cancer-related fatigue isn’t the kind of tired that comes after a long day. It’s not fixed by a good night’s sleep. It’s the kind that makes someone say, “If I shower, I have to rest before I can get dressed,” or “If I cook dinner, that’s it for the day.”

In the infusion chair, fatigue is everywhere. During chemotherapy and radiation, most patients experience it at some point. For some, it lingers long after treatment ends. And when fatigue begins to interfere with daily life—cooking, driving, bathing, managing medications—it quietly erodes independence.

Talking to patients about fatigue.

But fatigue conversations are easy to rush. We have vitals to check, labs to review, medications to hang. It’s tempting to treat fatigue as expected background noise. I’ve found that the difference between a rushed fatigue conversation and a meaningful one often comes down to slowing down by just a minute.

Instead of asking only, “How tired are you?” I try to ask: “Does rest help at all?” “What are you having to give up because of this?” “Has this changed recently?” Those questions shift the focus from intensity to impact.

Sometimes the answer tells me this is mild—rest helps, daily routines are intact. In those cases, I don’t overwhelm the patient with 10 strategies. I make eye contact, validate the experience, and offer one idea.

“A lot of people on this treatment describe a different kind of tired—like their battery doesn’t recharge fully. One thing that can help is protecting the time of day when your energy is best. What matters most that you’d want to use that energy for?”

That might be the whole teaching.

Fatigue affects function.

Other times, the answers tell a different story.

“I can’t keep up with the grocery shopping anymore.”

“I stopped driving because I don’t feel steady.”

“I need help getting dressed some mornings.”

Now we’re in a different place. When fatigue starts limiting daily activities, it’s no longer just a symptom—it’s a safety issue. That’s when I slow down more, loop in the provider if needed, and tailor the conversation carefully.

The research supports what many of us have seen: fatigue affects function. Large meta-analyses now show that exercise and behavioral strategies are among the most effective interventions we have for managing cancer-related fatigue.

Fatigue influences fall risk, mood, treatment adherence, even hospital use. But at the chairside, what matters most isn’t quoting data. It’s recognizing the moment when a patient feels seen.

One of the hardest parts to explain is movement. When someone is exhausted, suggesting exercise can feel almost cruel. I’ve learned to be very specific and very gentle. “We’re not talking about the gym. Think small and steady—maybe a five- or 10-minute walk on the days you feel up to it. It sounds backwards, but light movement actually helps your body use energy more efficiently over time.” Then I pause and ask, “Where could that fit into your day?”

If walking isn’t realistic, we pivot. Maybe it’s seated stretches. Maybe it’s physical therapy. Maybe it’s just standing up and moving around the house twice a day. The goal isn’t perfection—it’s preventing the “boom and crash” cycle where patients use all their energy at once and then spend the next day recovering.

Validating the experience of patients.

Sometimes fatigue isn’t only physical.

When I notice tension in someone’s shoulders or a strain in their voice, I might suggest something simple:

“Stress leaks energy. Is there one small thing each day that helps you feel a little more like yourself?”

That might be sitting outside for 10 minutes. Listening to music. Calling a friend. Guided relaxation before bed. The evidence for psychosocial and mind–body strategies is strong, but in practice it feels less like an intervention and more like permission.

Permission to rest.

Permission to ask for help.

Permission to pace.

And sometimes, permission to escalate.

If fatigue is limiting self-care—bathing, dressing, eating—or if there’s new shortness of breath, confusion, near falls, or severe mood symptoms, that’s not something to normalize. That’s when I say, “This is more than expected fatigue. Let’s bring your provider in.”

Documentation matters too, but I try not to let it drive the interaction. I use CTCAE (Common Terminology Criteria for Adverse Events) grading to guide my thinking—mild, moderate, severe—and to communicate clearly with the team. But the heart of the encounter isn’t the grade. It’s the validation.

“I hear you. This is affecting your everyday life.”

Fatigue is common in oncology. But common doesn’t mean minor.

When we ask about impact instead of intensity, when we tailor one or two specific strategies instead of reciting a list, when we let silence stretch long enough for the real story to surface, fatigue teaching becomes more than routine education.

It becomes actionable.

And that’s often what helps patients most.

Courtney Desy, BSN, RN, OCN, is an oncology infusion nurse. She cares for adults receiving chemotherapy and immunotherapy and is the founder of the Stronger Than Chemo Foundation, a nonprofit focused on improving patient education and support during cancer care.