Visual medical education by Armando Hasudungan
Medical science, drawn into focus.
Explore visual explanations that reveal how the facts, processes and clinical patterns fit together—then discover the coming AH study platform, built to guide what you study next and check what stuck.
Clear visual explanations used by medical and allied-health learners around the world.
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Browse by subject or jump straight into the explanation you need. No account required.
Gastroenteritis (Infectious Diarrhoea)
Overview Gastroenteritis continues to cause significant morbidity in developed and developing countries. The most common cause are viral and bacterial including: Norovirus Enteric adenoviruses E-coli Salmonella spp. and Shigella spp. Campylobater jejuni Diarrhoea: Loose, water like stools that occur with increased frequency and an increased volume of >200g per day Gastroenteritis: >3 or more loose…
View topic ↗Alzheimer's Disease
Overview Alzheimer disease is characterised by an insidious onset of symptoms with initial forgetfulness progressing over time to profound memory impairment with accompanying dysphasia, dyspraxia and personality change. Dementia: Clinical syndrome that is characterised by a progressive deterioration in cognition with resulting decline in function. Alzheimer disease: Characterised by an insidious onset of symptoms with initial…
View topic ↗Scaphoid Fracture
Overview Scaphoid fracture is the most common carpal bone fracture , accounting for ~60–70% of all carpal fractures. It occurs most frequently in young adults (15–40 years) following a fall on the outstretched hand (FOOSH). The scaphoid’s tenuous blood supply predisposes to non-union and avascular necrosis, especially in proximal fractures. Early recognition is essential as…
View topic ↗Nephrotic Syndrome
Overview Nephrotic syndrome is a relatively rare but important manifestation of kidney disease.Nephrotic syndrome classically presents with heavy proteinuria , minimal hematuria, hypoalbuminemia, hypercholesterolemia, edema , and hypertension. In general, all patients with hypercholesterolemia secondary to nephrotic syndrome should be treated with lipid-lowering agents because they are at increased risk for cardiovascular disease. Nephrotic syndrome…
View topic ↗Anorectal Disease
Overview Anorectal conditions are a common presentation in the primary care setting. A history and physical examination usually will determine the etiology. Physical examination includes visual inspection, digital rectal examination, and anoscopy Anal Fissure More info on Anal fissures Anal Abscess More info on Anal Abscess Haemorrhoids More info on Haemorrhoids Other anorectal disease…
View topic ↗Aortic Regurgitation (incompetence)
Overview Aortic regurgitation (AR) is backward flow of blood from the aorta into the left ventricle during diastole because the aortic valve does not close completely. AR may result from disease of the valve leaflets, dilatation of the aortic root or both. Chronic AR causes progressive left-ventricular volume overload and dilatation, whereas acute severe AR…
View topic ↗Lung Cancer
Overview Lung cancer is the leading cause of cancer deaths in men and women. Lung cancer can be divided into small cell and non-small cell carcinoma. Small cell lung carcinoma presents late stage and has poorer prognosis. A solitary pulmonary nodule measuring 8 mm or less can be followed radiographically. For larger lesions, a biopsy, whether…
View topic ↗Full resource library
Browse all topics ↗Choose how you learn
One idea. More than one way to see it.
Use the format that helps the topic click, then switch formats when you need to reinforce it.
Videos
Hand-drawn explanations that build the big picture as the concept unfolds.
Notes
Clear written explanations for review, reference and filling in the details.
Diagrams
Visual snapshots that help you easily review topics.
Questions
Test whether the explanation stayed with you—not just whether it looked familiar.
Good places to begin
Explanations learners return to.

Coronary blood supply – coronary arteries and cardiac veins
Explore the coronary circulation and how it delivers oxygen-rich blood to the heart muscle through the right and left coronary arteries. This video explains the anatomy, branching patterns, and physiological significance of coronary blood flow in maintaining cardiac function.

Pharmacology – Diuretics
Understand how diuretics work to promote fluid loss by targeting different parts of the nephron and altering electrolyte reabsorption. This video covers the main classes of diuretics, their mechanisms, clinical uses, and potential side effects.

Influenza overview
Learn how influenza spreads, mutates, and — most importantly — how vaccination and early treatment protect you from severe disease. This video explains influenza types (A, B, C, D), antigenic drift vs. antigenic shift, transmission pathways, symptoms, diagnosis, complications, and prevention in clear, practical terms. You’ll learn how seasonal flu viruses differ, why type A…
Our mission
Medical science is complex. Understanding it should feel possible.
Armando Hasudungan turns difficult medical science into clear visual explanations and connected learning experiences—so learners can see the whole picture, remember what matters and find a clearer way forward.
See it clearly
Turn abstract processes and invisible relationships into something the learner can picture.
Connect the pieces
Build understanding around how concepts fit together—not a pile of isolated facts.
Make it useful
Help learners move from explanation to recall, revision and the next logical step.
What clarity feels like
When the topic stops being a blur.
Learners do not come back because the subject became easy. They come back because the explanation gave them a picture they could work with.
“Armando's teaching style gives me the foundational knowledge.
“The notes I make during his videos help me retain everything better.
“The drawings are amazing and super easy to remember.
Coming soon: the AH study platform
The explanation is only the start.
The free library helps you find a clear explanation. The AH platform is being built to help you connect the resources, follow a clearer path and check what actually stuck.
- Watch in a focused, ad-free study environment.
- Move between connected videos, notes, diagrams and questions.
- Know what belongs next instead of rebuilding the study path yourself.
- Test your understanding while the topic is still fresh.
New and worth a look
Keep building the picture.
Lambert-Eaton Myasthenic Syndrome
Overview Lambert–Eaton myasthenic syndrome (LEMS) is a rare autoimmune disorder of the presynaptic neuromuscular junction. It causes impaired acetylcholine release, producing the characteristic triad of proximal muscle weakness, reduced reflexes and autonomic dysfunction. LEMS may occur as a paraneoplastic syndrome—most commonly associated with small-cell lung cancer (SCLC)—or as a non-tumour-associated autoimmune disorder. Neuromuscular junction: connection…
View this topic ↗About Visualising Medicine
Good education does not remove complexity. It makes complexity feel simple.
Visualising Medicine is the team behind Armando Hasudungan. We bring together medicine, illustration, writing and technology to make difficult ideas clearer—and build better ways for learners to use them.



