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.
Connected studyComing soon
Clear visual explanations used by medical and allied-health learners around the world.
Explore the free library
Start with the topic in front of you.
Browse by subject or jump straight into the explanation you need. No account required.
Chronic Granulomatous Disease
Overview Chronic granulomatous disease (CGD) is a rare, inherited primary immunodeficiency characterised by defective function of the NADPH oxidase enzyme complex in phagocytes, leading to failure of the oxidative burst required for intracellular killing of pathogens. This results in recurrent, often life-threatening bacterial and fungal infections, particularly with catalase-positive organisms, and predisposes to granuloma formation…
View topic ↗
Osteosarcoma
Osteosarcoma is a primary osseous malignant neoplasm composed of mesenchymal cells producing osteoid and immature bone, even if only in small amounts
View topic ↗
Hyperparathyroidism
This section will mainly focus on Primary Parathyroidism Overview Primary Hyperparathyroidism (PHPT) is generalised disorder calcium, phosphate and bone metabolism due to increased secretion of parathyroid hormone normally leading to hypercalcaemia and hypophosphatemia. PHPT may present with recurrent nephrolithiasis, peptic ulcers, mental and muscle changes and less frequently bone resorption. Frequently, routine blood tests will…
View topic ↗
Tarsal Tunnel Syndrome
Overview Tarsal Tunnel Syndrome (TTS), also known as posterior tibial nerve neuralgia, is an entrapment neuropathy caused by compression of the tibial nerve or its terminal branches within the fibro-osseous tarsal tunnel beneath the flexor retinaculum on the medial side of the ankle. It represents the lower extremity analogue of Carpal Tunnel Syndrome. Because the…
View topic ↗
Adductor-related Groin Pain
Overview Adductor-related groin pain is a clinical entity characterised by pain localised to the hip-adductor region, with both tenderness of the adductors and recognisable pain reproduced by resisted hip adduction. It commonly affects athletes participating in sports involving kicking, sprinting, rapid acceleration, cutting or change of direction. 1 The term encompasses acute adductor injuries and…
View topic ↗
Pneumonia
Overview Pneumonia is infection in the lower respiratory tract and is characterised by fevers, purulent sputum, leucocytosis, low oxygen levels and new lung infiltrates (consolidation) on radiographic imaging. The infection is identified by the site of consolidation. Consolidation is where the lung tissue is filled with fluid (ie. water, blood, pus, microbes). Types of pneumonia…
View topic ↗
Spondylarthropathy
Overview The spondyloarthropathies are a diverse group of inflammatory arthritides that share certain genetic predisposing factors and clinical features. Their most characteristic feature is inflammatory back pain. Enthesitis, another characteristic feature, involves inflammation at sites where tendons, ligaments, or joint capsules attach to bone. Features of Spondylarthropathy Sacroiliac and spinal (axial involvement) Enthesitis at long attachments…
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.
01 / WATCH02 / READ03 / SEE04 / CHECK
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.
Immunology Map IV – Innate Immune response I
Learn how the innate immune system provides the body's first line of defense through physical barriers, immune cells, and rapid responses to pathogens. This video covers key players like macrophages, neutrophils, and pattern recognition receptors involved in early immune activation.
Autoimmune Hepatitis
Autoimmune hepatitis as the name suggests is when the bodies own immune cells attack the liver cells resulting in inflammation. The disease may be asymptomatic (meaning no symptoms) or start as acute hepatitis and progress to chronic liver disease and cirrhosis. Autoimmune hepatitis is four times more common in women than in men.
Medial Ankle Pain (Inner ankle pain)
Explore the common causes of medial ankle pain, including tendon injuries, ligament strain, and conditions like posterior tibial tendon dysfunction. This video explains the anatomy involved, symptoms to watch for, and approaches to diagnosis and treatment.
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.
- 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.
Adductor-related Groin Pain
Overview Adductor-related groin pain is a clinical entity characterised by pain localised to the hip-adductor region, with both tenderness of the adductors and recognisable pain reproduced by resisted hip adduction. It commonly affects athletes participating in sports involving kicking, sprinting, rapid acceleration, cutting or change of direction. 1 The term encompasses acute adductor injuries and…
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.