Physician · Greater Noida

Always Tired? Causes of Fatigue & When to See a Doctor

Persistent tiredness that doesn't improve with rest can have many causes — from anaemia and vitamin deficiency to thyroid problems, diabetes, infections, poor sleep, or stress. Dr. Manuj Sondhi, MRCP (UK), a Consultant Physician at Nirvana Clinic, Greater Noida, evaluates ongoing fatigue to find the actual cause rather than treating it blindly.

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See a doctor urgently if

When Fatigue Needs Prompt Attention

⚠ Seek prompt medical care if tiredness comes with:

  • Chest pain, severe breathlessness, or palpitations
  • Fainting, confusion, or inability to stay awake
  • Rapid unexplained weight loss, or fever and night sweats
  • Blood in stool or urine, or looking very pale
  • Sudden severe weakness on one side of the body
Common Causes

What Can Make You Feel Tired All the Time

Fatigue is a symptom, not a diagnosis — these are common, treatable causes a physician checks for. Self-diagnosis is unreliable, so the aim is to identify which apply to you.

Anaemia & deficiencies

Low iron, vitamin B12 or vitamin D are very common causes of tiredness, especially in Indian diets — and are usually correctable.

Thyroid problems

An under- or over-active thyroid frequently causes fatigue. Thyroid assessment is a standard first check.

Diabetes & blood sugar

High or poorly controlled blood sugar can cause persistent tiredness. Diabetes evaluation may be needed.

Infections

Recent or ongoing infections — including post-viral fatigue — can leave you drained for weeks. See an infection assessment if relevant.

Poor sleep & sleep apnoea

Unrefreshing sleep, snoring or sleep apnoea is an under-recognised cause of daytime tiredness.

Stress & low mood

Stress, anxiety and depression commonly present as physical tiredness. Mental-health support is available at the same clinic.

Liver, kidney or heart

Conditions such as fatty liver, kidney or heart issues can show up first as fatigue.

Medication side-effects

Several common long-term medicines cause tiredness. A medicine review can identify these.

How a Physician Helps

How Dr. Manuj Evaluates Ongoing Tiredness

1
Detailed historyPattern of tiredness, sleep, diet, mood, medications and other symptoms — most clues come from history.
2
Targeted tests onlyTests chosen to your history — typically blood count, thyroid, blood sugar/HbA1c and key vitamins — not a blanket panel.
3
Clear diagnosis & planA plain-language explanation of what's causing the tiredness and what to do about it.
4
Conservative treatmentCorrecting the underlying cause, with the minimum effective medication and a sensible follow-up.
Physician in Greater Noida Thyroid care Diabetes care Fatty liver Medicine review
Common Questions

Fatigue — FAQs

Why am I always tired even after sleeping enough?
Tiredness despite adequate sleep often points to a treatable cause such as anaemia, vitamin B12/D deficiency, thyroid problems, blood sugar issues, sleep apnoea, or stress. A physician assessment with targeted tests usually identifies it.
What tests are done for ongoing fatigue?
Commonly a complete blood count, thyroid function (TSH), blood sugar/HbA1c, ferritin (iron stores), vitamin B12 and vitamin D — chosen based on your symptoms. Further tests are added only if the history or results point to them.
Can thyroid or diabetes cause tiredness?
Yes. An under- or over-active thyroid and high or poorly controlled blood sugar are both common, very treatable causes of persistent tiredness, which is why they are checked early.
When is tiredness something serious?
Tiredness with chest pain, severe breathlessness, fainting, rapid unexplained weight loss, fever with night sweats, or blood in stool/urine needs prompt medical attention rather than waiting.
About the Physician

Consult Dr. Manuj Sondhi, MRCP (UK)

Dr. Manuj Sondhi (MBBS, MD, DNB, MRCP (UK), PGD in Clinical Endocrinology & Diabetes) is a Consultant Physician & Diabetologist at Nirvana Clinic, Greater Noida, with 15+ years of experience and 17 peer-reviewed publications. See the full physician page →

Tired All the Time? Get It Checked Properly

Book a consultation with Dr. Manuj Sondhi at Nirvana Clinic, Sun Twilight Mall, opposite Delta 1 Metro Station, Greater Noida.

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Medical disclaimer: This page is for general education and does not replace professional medical advice, diagnosis or treatment. Fatigue has many possible causes and only a qualified doctor can identify yours after assessment. Always consult a registered medical practitioner. In a medical emergency, contact local emergency services or go to the nearest hospital immediately.