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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Multiple Sclerosis
"Each patient ought to feel somewhat the better after the physician's visit irrespective of the nature of the illness." -Warfield Theobald Longcope Overview Multiple sclerosis (MS) is defined as an inflammatory demyelinating disease characterised by the presence of episodic neurological dysfunction in at least 2 areas of the CNS (brain, spinal cord, and optic nerves)…
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Viral Encephalitis
Overview Viral encephalitis is an acute, life-threatening inflammatory condition of the brain parenchyma caused by direct viral invasion or secondary immune-mediated mechanisms. It represents a neurological emergency associated with high rates of mortality and long-term neurodevelopmental or cognitive sequelae if treatment is delayed. Infectious encephalitis is distinct from aseptic viral meningitis; while meningitis is confined…
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Undifferentiated Connective Tissue Disease (UCTD)
Overview UCTD is a systemic autoimmune disease with features of connective tissue disease (CTD), but does not fulfill classification criteria for any specific CTD such as SLE, Sjögren’s syndrome, systemic sclerosis, or polymyositis. It is a diagnosis of exclusion used for patients with persistent autoimmune features who do not evolve into a defined CTD. Commonly…
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Pyoderma Gangrenosum
Overview Pyoderma gangrenosum (PG) is a rare, severe, non-infectious inflammatory cutaneous disease belonging to the group of neutrophilic dermatoses . Despite its name, it is neither an infectious pyoderma nor a primary gangrenous necrosis; rather, it is driven by dysregulated innate immune activation leading to dermal neutrophilic infiltration and tissue destruction. Characterized by rapidly expanding,…
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Fistula-In-Ano
Overview Fistula-In-Ano, also referred to as “Anorectal fistula”, is an abnormal tunnel between the anal canal (hollow viscus) and the surface of the body. Over 90% are attributed to prior anorectal abscess. It may occur in the presence of Crohn’s Disease and has an association with obesity and diabetes. Patients experience intermittent rectal pain,…
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Bowel Obstruction
Overview Bowel obstruction is a blockage of intestinal contents, either mechanical (e.g., adhesions, hernias, malignancy) or functional (e.g., ileus), leading to impaired transit, proximal dilation, and downstream complications including ischaemia and perforation if untreated. Key features of bowel obstruction include colicky abdominal pain, distension, nausea with bilious or faeculent vomiting, obstipation, initially high-pitched then absent…
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X-linked Agammaglobulinaemia (XLA / Bruton’s Disease)
Overview X-linked agammaglobulinaemia (XLA) is a rare primary immunodeficiency caused by mutations in the Bruton’s tyrosine kinase (BTK) gene , leading to failure of B-cell maturation. It results in profound hypogammaglobulinaemia and susceptibility to recurrent bacterial infections, particularly with encapsulated organisms. It usually presents after 6 months of age (once maternal IgG wanes). Prevalence is…
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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 II
Delve deeper into the innate immune response by examining the roles of inflammatory mediators, the complement system, and natural killer (NK) cells. This video highlights how these components work together to recognize and eliminate pathogens quickly and effectively.
Primary Myelofibrosis – Overview (presentation, pathophysiology, investigation, treatment)
Learn about Primary Myelofibrosis, a chronic myeloproliferative disorder characterized by bone marrow fibrosis, splenomegaly, and cytopenias. This video covers its clinical presentation, underlying pathophysiology, diagnostic approach, and current treatment strategies.
Osteoarthritis Overview (causes, pathophysiology, investigations, treatment)
Explore the key causes, pathophysiology, and clinical features of osteoarthritis, the most common form of joint degeneration. This video also covers essential investigations and evidence-based treatment options to manage symptoms and slow progression.
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.
Chronic inflammatory demyelinating polyneuropathy (CIDP)
Overview Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is an acquired immune-mediated disorder of peripheral nerves and nerve roots, causing demyelination, impaired nerve conduction, weakness, sensory disturbance and reduced or absent reflexes. Typical CIDP causes progressive or relapsing symmetrical proximal and distal weakness with sensory loss developing over at least 8 weeks . This time course helps…
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.