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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Leukaemia
Overview Leukemia is a common malignancy in children and adults that occurs when alterations in normal cell regulatory processes cause uncontrolled proliferation of hematopoietic stem cells in the bone marrow. Leukaemia: Clonal proliferation of hematopoietic stem cells in the bone marrow Acute Leukaemia: Clonal proliferation of hematopoietic stem cells in the bone marrow that develops…
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Selective IgA Deficiency
Overview Selective IgA deficiency is the most common primary immunodeficiency, defined by very low or absent serum IgA levels with normal levels of other immunoglobulins (IgG, IgM). Many patients are asymptomatic, but some develop recurrent mucosal infections, allergic disease, or autoimmune disorders. Prevalence is estimated at 1:300 to 1:700 in Caucasian populations. Diagnosis is often…
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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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Pelvic Inflammatory Disease
Overview Pelvic inflammatory disease (PID) comprises a spectrum of inflammatory disorders of the upper female genital tract, including any combination of endometritis, salpingitis, tubo-ovarian abscess, and pelvic peritonitis. Causative organisms are either sexually transmitted (such as C trachomatis , N gonorrhoeae , Mycoplasma genitalium ) or endogenous vaginal organisms (for example, Bacteroides species) that ascend…
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Hydroxyapatite Deposition Disease
Overview Hydroxyapatite Deposition Disease (HADD) is a crystal-induced tendinopathy caused by the deposition of hydroxyapatite (HA) crystals, typically in periarticular soft tissues, especially tendons and bursae. The shoulder (supraspinatus tendon) is most commonly affected. It often presents between ages 30–60, more frequently in women. While often asymptomatic, it can cause acute pain and functional limitation…
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Hydatidiform Mole (Molar Pregnancy)
Overview Hydatidiform moles are part of a group of diseases falling under gestational trophoblastic disease. A hydatidiform mole refers to the abnormal growth of trophoblastic cells in the placenta, resulting in edematous placental villi that form hydatidiform structures. It is classified as either partial or complete, causing either abnormal foetal development (resulting in foetal demise)…
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Bronchiolitis
Overview Bronchiolitis is often a viral cause mainly Respiratory Syncytial Virus (RSV). Bronchiolitis is the most common respiratory tract infection of neonates and is usually self-limiting. A major source of confusion of treatment is differentiating a viral bronchiolitis to asthma. In summary bronchiolitis is usually seen in infants <2yo. Asthma is seen in older children. Bronchiolitis…
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Achalasia (esophageal) – signs and symptoms, pathophysiology, investigations and treatment
Achalasia is a rare disorder that results from progressive destruction of ganglion cells in the myenteric plexus of the oesophageal wall. The destruction of these cells leads to the inability of the lower oesophageal sphincter to relax, and leads to the loss of peristalsis of the distal oesophagus. As a result there is dilatation of…
Headache – Overview (types, signs and symptoms, treatment)
Explore the different types of headaches including tension, migraine, and cluster, along with their characteristic signs and symptoms. This video also covers key treatment options and clinical clues for effective headache management.
An Approach to Sacroiliac Joint Pain (SIJ PAIN) – history, examination and investigations
Sacroiliac joint pain: how to recognize causes, tests, and treatments to relieve deep unilateral buttock pain and restore pelvic stability. Learn the signs of sacroiliac (SI) joint pain, sacroiliitis, and how to tell mechanical issues from inflammatory or infectious causes. This video explains typical symptoms—deep one-sided buttock pain often radiating to the lateral thigh or…
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
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Allergic Conjunctivitis
Overview Allergic conjunctivitis is inflammation of the conjunctiva caused by hypersensitivity to an allergen. It usually presents with bilateral ocular itching, redness, watering and conjunctival swelling , often alongside allergic rhinitis, asthma or atopic dermatitis. 1,2 Seasonal and perennial allergic conjunctivitis are common and generally do not threaten vision. Vernal keratoconjunctivitis and atopic keratoconjunctivitis are…
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.