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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Rhesus Hemolytic Disease
Rhesus haemolytic disease Overview Rhesus haemolytic disease, more accurately called RhD haemolytic disease of the fetus and newborn (HDFN), occurs when maternal IgG antibodies against the RhD antigen cross the placenta and destroy RhD-positive fetal red blood cells. It usually develops after an RhD-negative mother has previously been sensitised by pregnancy, fetomaternal haemorrhage or transfusion.…
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Graves' Disease
Overview Graves' disease is the most common cause of hyperthyroidism, caused by an autoimmune reaction in which TSH receptor autoantibodies stimulate the thyroid gland, leading to an increase in the production of thyroid hormones. It’s named after Dr Robert James Graves, an Irish physician who in 1835 gave one of the first thorough clinical descriptions…
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Pregnancy (not a disease)
Overview Pregnancy – Overview Physiological Changes in Pregnancy Uterus, Vagina and Breast Physiology changes Uterus (Cervix + Isthmus + Body of uterus) Muscle hypertrophy til 20weeks then stretching till term. Uterine and ovarian arteries undergo hypertrophy Cervix Reduced collagen → allows dilatation Hypertrophy of cervical glands → thick mucus plug Uterine body ↑size, shape, shape and consitency Increases…
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Gastric Antral Vascular Ectasia (GAVE)
Overview Gastric antral vascular ectasia (GAVE, “watermelon stomach”) is a rare but important cause of non-variceal upper gastrointestinal bleeding, often presenting with chronic iron-deficiency anaemia or recurrent overt bleeding in older adults, particularly women [1–4]. It is frequently associated with systemic conditions such as liver cirrhosis (~30% of cases) and autoimmune/connective-tissue disease (especially systemic sclerosis).…
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Urinary Tract Infection
Overview Infection of the urinary tract is common and more so in women (due to shorter urethra and hormonal changes). UTIs may be classified as either a lower (Cystitis, urethritis and Prostatitis) or upper UTI (pyelonephritis). The main causative agents are bacteria such as E-coli. A lower UTI can progress to an upper UTI causing systemic symptoms…
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Croup
Overview Croup, also known as largnotracheobronchitis, is a usually self limiting upper airway viral infection causing upper airway obstruction. Croup is more common in boys than in girls, usually occurs between six and 36 months of age, and peaks during the second year of life. Croup is usually caused by viruses, which are detected in up to…
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RA Related Pleural Effusion
Overview Rheumatoid pleural effusion (RPE) is an uncommon extra‑articular manifestation of rheumatoid arthritis (RA), occurring in ~2–5% of patients, more often in middle‑aged men with high rheumatoid factor (RF) titres, despite RA being more common in women. It typically presents during active disease or in patients with rheumatoid nodules, but can occasionally precede joint symptoms.…
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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.
Giant cell Arteritis and Takayasu arteritis (Large Vessel Vasculitis) – signs, pathophysiology
Giant Cell Arteritis and Takayasu Arteritis are large vessel vasculitides that primarily affect major arteries, leading to systemic and ischemic symptoms. This video covers their clinical signs, underlying pathophysiology, and key differences in presentation and affected demographics.
Acute Gastroenteritis (Paediatrics) Overview
Learn the key clinical features, causes, and pathophysiology of acute gastroenteritis in children, including viral and bacterial etiologies. This video also explains diagnosis, dehydration assessment, and treatment strategies such as oral rehydration therapy.
Dermatology – Lesion Terminology
Master the key dermatological terms used to describe skin lesions, including macules, papules, plaques, and more. This video simplifies lesion classification to enhance clinical recognition and diagnosis accuracy.
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.
Aortic Aneurysm
Overview An aortic aneurysm is a pathological dilatation of the aorta caused by weakening of the arterial wall. It may involve the aortic root, ascending aorta, arch, descending thoracic aorta, thoracoabdominal aorta or abdominal aorta. Most aortic aneurysms are asymptomatic and are discovered incidentally or through screening. Progressive enlargement increases the risk of rupture, dissection,…
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.