Clinical medicine rotations
Internal medicine
Internal medicine is the non-surgical care of adults with illnesses of the body organs. A psychiatrist needs it because mental and physical illness overlap: confusion or low mood can be the first sign of medical disease, and psychiatric drugs affect the heart, liver and metabolism.
Depth by stage, Pre-U → Consultant (details)
What is it?
Internal medicine (often just called 'medicine') covers the diagnosis and non-surgical treatment of adult disease: heart failure, diabetes, strokes, infections, kidney and liver disease, lung disease and much more. It is usually the longest and most important clinical rotation in medical school, and the base on which every other specialty builds.
Students learn to take a full history, examine every body system, order and interpret blood tests, ECGs and X-rays, and think through a list of possible diagnoses. They join ward rounds, clerk new admissions and present patients to their seniors.
For a future psychiatrist, this rotation teaches the habit of asking 'could this be a medical problem?' before calling anything purely psychological. Many people with severe mental illness also die younger from heart disease and diabetes, so psychiatrists must keep these skills alive throughout their careers.
Why does a psychiatrist need it?
Psychiatric symptoms often have medical causes (thyroid disease, low sodium, infection, low blood sugar, medication side effects), and acutely confused patients on medical wards are among the most common referrals a psychiatrist receives. Antipsychotics, lithium and antidepressants can cause weight gain, diabetes, heart rhythm changes and kidney problems, so the psychiatrist must monitor and interpret the same tests a physician uses.
What level is expected at each stage?
Scale: 1. Aware → 2. Understands → 3. Applies → 4. Masters / Teaches. What the levels mean.
- Pre-UNot expected
- Pre-clinicalAwareMeets common diseases as the 'why' behind physiology and pathology lectures.
- ClinicalUnderstandsClerks and presents medical patients, builds a differential diagnosis and passes the medicine long and short cases.
- HousemanshipAppliesManages ward patients day to day, including on-call emergencies, under supervision.
- Medical officerAppliesHandles acute medical problems independently and recognises when a psychiatric presentation is really medical.
- Psych traineeAppliesApplies medical knowledge to rule out organic causes, monitor psychotropic side effects and work with physicians in liaison psychiatry.
- Specialist / consultantAppliesLeads physical-health monitoring for psychiatric patients and works closely with physicians on complex shared cases.
What are the key topics?
Core systems
- Cardiology: chest pain, heart failure, arrhythmias, reading an ECG including the QT interval
- Respiratory: asthma, COPD, pneumonia, tuberculosis
- Gastroenterology and hepatology: liver disease, alcohol-related liver damage, GI bleeding
- Nephrology: acute kidney injury, chronic kidney disease, fluid and electrolyte balance
- Endocrinology: diabetes, thyroid disorders, adrenal and pituitary disease
- Infectious disease: sepsis, dengue, HIV, common tropical infections in Malaysia
Clinical method
- Full history taking and systems review
- General and system-by-system physical examination
- Building a problem list and differential diagnosis
- Interpreting full blood count, renal and liver profiles, blood gases, chest X-ray and ECG
- Presenting a case concisely on a ward round
What carries directly into psychiatry
- Delirium: recognising acute confusion and searching for its medical cause
- Electrolyte problems such as low sodium, which can cause confusion or seizures
- Thyroid disease presenting as anxiety, depression or mania
- Alcohol withdrawal, Wernicke's encephalopathy and the role of thiamine
- Metabolic syndrome: weight, blood pressure, glucose and lipids
- Drug interactions and how kidney or liver failure changes drug dosing
Chronic disease and the whole person
- Living with long-term illness and its effect on mood
- Adherence to treatment and health beliefs
- Breaking bad news and shared decision-making
- Depression and anxiety after heart attack, stroke or cancer diagnosis
How is it learned and assessed?
- Ward-based clerking, bedside teaching and ward rounds
- Case write-ups and logbooks of patients seen and procedures observed
- End-of-posting assessments: long case, short cases, OSCE and written papers (MCQ/short answer)
- Final professional examination in medicine at the end of medical school
- Later, physical-health topics appear in psychiatry exams (e.g. MRCPsych Paper A/B and the CASC physical-examination stations)
Typical textbooks and resources
- Kumar and Clark's Clinical Medicine — a standard comprehensive textbook
- Davidson's Principles and Practice of Medicine — widely used in Malaysian medical schools
- Macleod's Clinical Examination — the classic guide to examining patients
- Oxford Handbook of Clinical Medicine — pocket reference used on the wards
- MOH Malaysia Clinical Practice Guidelines (e.g. diabetes, hypertension) — local standards of care
Titles are widely used examples; editions change. Use university libraries or legitimate purchases.
Common questions
Why does a psychiatrist need to know internal medicine?
Because many mental symptoms have physical causes, and many psychiatric medicines have physical side effects. A psychiatrist who cannot spot a thyroid problem, an infection or a dangerous ECG change can miss a treatable illness or harm a patient.
Do psychiatrists examine patients physically?
Yes. Psychiatrists are medical doctors and still perform physical examinations, order blood tests and read ECGs, especially when starting medication or when a patient becomes confused or unwell.