Tired All the Time? When Fatigue Is Worth Discussing With Your GP

Everyone feels tired sometimes. A run of late nights, a stressful stretch at work, the relentless pace of parenting or shift work — any of these can leave you running on empty. That kind of tiredness usually makes sense, and it usually passes.

But when tiredness lingers without a clear reason, keeps coming back, or starts making daily life harder than it should be, it’s worth paying attention. Persistent fatigue is one of the most common reasons people visit a GP — and one of the most frequently brushed aside before it gets there.

At Shire Family Medical, fatigue is taken seriously as a symptom with many possible causes. Sometimes the answer is straightforward. Often, though, it involves a combination of factors — sleep, stress, nutrition, hormones, iron levels, mental health, infection, medication, or an underlying condition that hasn’t yet been identified.

This article walks through when fatigue is worth discussing with your GP, what to expect from that conversation, and how blood tests or follow-up care might fit into the picture.

Fatigue Is More Than Feeling Sleepy

Tiredness and fatigue aren’t quite the same thing. Sleepiness is what you feel when you haven’t had enough rest. Fatigue goes deeper — and often doesn’t resolve with a good night’s sleep.

People describe it differently. Some say they feel heavy or flat. Others talk about a foggy head, a loss of drive, or a body that just won’t cooperate the way it used to. You might notice:

• Waking up tired even after a full night’s sleep
• Everyday tasks taking more out of you than they should
• Needing more rest than usual to get through the day
• Trouble concentrating, or a sense of mental fog
• Feeling physically weak or run down
• Pulling back from exercise, work or family commitments
• Changes in mood, patience or motivation

Fatigue can arrive suddenly after an illness, or creep up so gradually that you barely notice it — until you realise you’ve stopped doing things you used to manage easily.

When Should You Speak With a GP?

A good rule of thumb: if fatigue has been hanging around for more than a couple of weeks, isn’t getting better on its own, or is affecting your ability to function normally — it’s worth booking an appointment.

You should seek advice sooner if your tiredness comes with any of the following:

• Unexplained weight loss
• Shortness of breath
• Chest pain, palpitations or fainting
• Persistent fever or night sweats
• New or worsening pain
• Blood in stool, urine or vomit
• Heavy periods or signs of low iron
• Low mood, anxiety or thoughts of self-harm
• Extreme sleepiness, sudden confusion or significant weakness

If your symptoms feel severe, sudden or urgent, call 000 or go to your nearest emergency department.

Common Reasons Fatigue Can Happen

There’s rarely one neat answer. Fatigue often has several overlapping causes, which is part of why it can be tricky to sort out without a proper conversation and some targeted tests.

Your GP may consider:

• Poor sleep, insomnia or sleep apnoea
• Stress, anxiety, depression or burnout
• Recent viral illness — including flu, COVID-19 or glandular fever
• Low iron, iron deficiency or anaemia
• Thyroid problems
• Blood sugar concerns or diabetes risk
• Vitamin deficiencies
• Medication side effects
• Alcohol, caffeine or other substance use
• Heart, kidney, liver, inflammatory or autoimmune conditions
• Pregnancy, perimenopause or other hormonal changes

This is why “it’s probably just stress” isn’t always a satisfying answer — even when stress is genuinely part of the picture. A GP can help work out whether there’s something else going on alongside it.

What Your GP May Ask

Most fatigue appointments start with a careful history. Your GP will want to understand what the tiredness actually feels like for you — when it started, whether it’s getting worse, and whether rest makes any difference.

They may also ask about:

• Sleep quality and your usual routine
• Snoring, waking unrefreshed or excessive daytime sleepiness
• Work hours, shift patterns or caring responsibilities
• Diet, alcohol, caffeine and exercise habits
• Mood, stress levels and anxiety
• Recent illness or overseas travel
• Periods, bleeding, possible pregnancy or menopause symptoms
• Bowel or urinary changes, or pain
• Medications and supplements you’re currently taking
• Family history and any previous blood test results

Being specific helps. Rather than just saying “I’m tired,” try to describe what’s actually changed. Something like: “I used to walk for 30 minutes without a second thought — now I need to stop after 10,” or “I’m sleeping eight hours and waking up just as exhausted.” The more concrete you can be, the easier it is for your GP to identify patterns.

Will I Need Blood Tests?

Not necessarily — but blood tests are a common next step when fatigue is persistent, unexplained, or comes with other symptoms. Whether they’re needed will depend on your individual situation.

Your GP may consider tests for:

• Full blood count and anaemia
• Iron studies and ferritin
• Thyroid function
• Blood sugar or diabetes risk
• Kidney and liver function
• Inflammation markers
• Vitamin B12, folate or vitamin D, where clinically relevant

Shire Family Medical has on-site pathology collection available after GP referral, which makes it easier to connect testing directly with your clinical review and follow-up care.

One thing worth knowing: blood tests are only useful when they’re interpreted in context. A result slightly outside the normal range doesn’t automatically explain fatigue, and a normal result doesn’t mean your symptoms aren’t real. Our related article on what happens after blood test results explains why trends, context and follow-up all matter.

Fatigue and Low Iron

Low iron is one of the more common causes of fatigue — particularly for people with heavy periods, those who are pregnant or breastfeeding, or anyone with low dietary iron intake, gastrointestinal symptoms, or a history of certain surgeries.

It can show up as tiredness, dizziness, breathlessness on exertion, headaches, restless legs, poor concentration, or feeling colder than usual. The tricky part is that these symptoms overlap with a lot of other conditions, which is why blood tests are needed before assuming iron is to blame.

If iron deficiency is confirmed, your GP will talk through what’s likely causing it and what the options are. For some people, oral iron supplements are enough. Others may need further investigation or a different approach. Our article on what to expect before and after an iron infusion covers how iron treatment might fit into a broader care plan where that’s clinically appropriate.

Fatigue, Stress and Mental Health

Fatigue can be physical, emotional — or both at once. Stress, anxiety, grief, burnout and depression can all affect energy levels, sleep, motivation and concentration in ways that feel very physical.

Some people don’t feel particularly “sad,” but notice they’re more irritable than usual, or flat, or overwhelmed, or just not bouncing back the way they normally would. Others feel physically exhausted simply because their mind never really switches off.

If your GP asks about your mood and stress levels, it’s not because they’re dismissing your physical symptoms — it’s because mental and physical health are closely connected, and both are worth exploring. Often, the two are happening together.

Fatigue After Infection

It’s not unusual to feel wiped out for several weeks after a viral illness. This can happen after flu, COVID-19, glandular fever or other infections — particularly if your sleep, appetite, hydration and normal routine took a hit during the illness itself.

That said, ongoing fatigue after an infection still deserves review if it isn’t improving, is quite severe, or is accompanied by breathlessness, chest symptoms, dizziness, persistent fever or unexplained weight loss.

A GP can help work out whether the right approach is watchful waiting, blood tests, a gradual return to activity, or something more. There’s no one-size-fits-all answer, and it often depends on how long it’s been and what the pattern looks like.

What You Can Do Before the Appointment

You don’t need to come prepared with a perfectly detailed health diary — but jotting a few things down in the week or two before your appointment can make the conversation much more useful.

It can help to note:

• When your fatigue tends to be worst
• How many hours of sleep you’re getting — and whether you wake feeling rested
• Your caffeine, alcohol and exercise habits
• Periods, bleeding or other physical symptoms
• Any recent illness
• Weight changes, mood shifts, pain or breathlessness
• Medications and supplements you’re taking

Even a short list helps your GP spot patterns and decide what to look at first.

How a Health Check Can Help

If your fatigue is part of a broader sense that something isn’t quite right, a structured health check can be a good starting point. Shire Family Medical’s Check-ups & GP Health Assessments include age-appropriate reviews that look at medical history, lifestyle, family history, blood pressure, pathology and relevant screening — not as a box-ticking exercise, but as a way to take stock of where things are and what, if anything, deserves closer attention.

Fatigue Deserves a Proper Conversation

Feeling tired is very common. But persistent fatigue — the kind that doesn’t shift, that creeps into your work and your relationships and your sense of yourself — is worth taking seriously. It may turn out to have a simple explanation. Or it may be the first signal that something needs a closer look.

For patients in Sutherland and the broader Sutherland Shire, Shire Family Medical can help assess ongoing tiredness, arrange appropriate tests where clinically indicated, and guide follow-up care based on your results and circumstances.

👉 Book a GP check-up to discuss ongoing fatigue