Visual explanationFree resource
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.
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Clear visual explanations used by medical and allied-health learners around the world.
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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 ↗Urinary Tract Infection (Children)
Overview Urinary Tract infections (UTIs) in children are common and usually carry low risk. UTIs are often non-specific and can not be diagnosed on symptoms alone. A clean specimen (urine) is required for the diagnosis of UTI. Any child who is unwell, and most children under 6 months, should be admitted for IV antibiotics. The…
View topic ↗Sickle Cell Anaemia
Overview Sickle cell anaemia is an autosomal recessive disorder causing production of abnormal ß-globin chains. A single amino acid is substituted in the ß-globin chain (Glu to Val at position 6). This results in the production of HbS (haemoglobin Sickle) rather than HbA. The common variants of sickle cell disease are: Sickle cell anaemia (SS…
View topic ↗Henoch-Schönlein purpura (Spring Fever)
Overview Henoch Schonlein Purpura is a IgA vasculitis characterised by the Tetrad: palpable purpuric petechial rash, abdominal pain, kidney involvement and arthralgia. Aetiology is unknown but thought to have a genetic predisposition. Clinical Manifestation Henoch Schonlein Purpura Tetrad Palpable purpuric petechial rash, abdominal pain, kidney involvement and arthralgia. Recent mucosal infection (respiratory or gastrointestinal) Rash…
View topic ↗Paediatric Orthopaedics Overview
Osteochondroses Osteochondroses is a condition that affects the epiphysis of bones. Pathology consists of localised area of ischaemic bone necrosis and oedema of adjacent soft tissue. Osteochondroses result in avascular necrosis of the epiphyseal bone, similar to Perthes disease, but less common. In general osteochondroses is more troublesome than serious. Age effects usually 10-15 +/-…
View topic ↗Ectopic Pregnancy
Overview Ectopic Pregnancy: A pregnancy in which the fetus develops outside the womb, typically in a fallopian tube. Amenorrhoea: Absence of mentruation. Laproscopy: A surgical procedure in which a fibre-optic instrument is inserted through the abdominal wall to view the organs in the abdomen or permit small-scale surgery. Laparotomy: A surgical incision into the abdominal cavity, for diagnosis…
View topic ↗Renal Cell Carcinoma
Overview Renal cell carcinomas (originate within the renal cortex) are responsible for 85% of all primary renal neoplasms. Transitional cell carcinomas of the renal pelvis are the next most common (~8%). Renal medullary carcinoma is a rare form of RCC seen in sickle cell disease. The most common pathological type of renal cell carcinoma is clear cell…
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One idea. More than one way to see it.
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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.
Chemistry Revision IX – Gases
Understand the fundamental properties of gases, including pressure, volume, temperature, and the gas laws that govern their behavior. This video explains concepts like Boyle’s, Charles’s, and the Ideal Gas Law with clear examples to reinforce your chemistry knowledge.
Renin-Angiotensin-Aldosterone System Overview
Understand the renin-angiotensin-aldosterone system (RAAS) and how angiotensin II is formed and functions to regulate blood pressure and fluid balance. This video explains the key steps in the pathway and the organs involved, including the kidneys, liver, lungs, and adrenal glands.
Vasculitis Pathophysiology Overview
Immune-mediated vasculitis: how inflammation damages arteries, causes palpable purpura, ischemia, stenosis, and aneurysms. Learn the core pathophysiology of vasculitis and the immune mechanisms driving vessel injury, including antigen presentation, molecular mimicry, immune complex deposition, ANCA-driven neutrophil activation, complement-mediated damage, and granulomatous inflammation. This clear, clinically focused video explains classification by vessel size (large, medium, small),…
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.
Jessica Payne-Burnett
Medical Student, Charles Sturt University
“The notes I make during his videos help me retain everything better.
Ayesha RaiStudent, Islamabad Medical and Dental College
“The drawings are amazing and super easy to remember.
Reem Mohamed Khair Abdalrazig
Student, Neelain University
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.
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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.