Armando Hasudungan site title and tagline
search
Types
  • All
  • Videos
  • Diseases
  • Clinical Presentations

Specialty

Specialty
  • Anatomy
  • Biochemistry
  • Cardiology
  • Cardiothoracic Surgery
  • Cell Biology
  • Chemistry
  • Clinical Anatomy
  • Colorectal Surgery
  • Critical Care Medicine
  • Dermatology
  • Ears, Nose, and Throat
  • Endocrinology
  • Gastroenterology
  • General Surgery
  • Genetics
  • Haematology
  • Immunology
  • Infectious Disease and Microbiology
  • Nephrology
  • Neurology
  • Neurosurgery
  • Obstetrics and Gynecology
  • Oncology
  • Opthalmology
  • Orthopaedics
  • Others
  • Paediatrics
  • Pathophysiology
  • Pharmacology
  • Physics
  • Physiology
  • Plastic Surgery
  • Project
  • Psychiatry
  • Pulmonology
  • Rheumatology
  • Sports Medicine
  • Upper Gastrointestinal Surgery
  • Urology
  • Vascular Surgery

Sub-specialty

Sub-specialty
  • Anaemias
  • Anaphylaxis and Hypersensitivity Reactions
  • Arthroplasty (Joint Replacement Surgery)
  • Bleeding and Clotting Disorders
  • Bone and Mineral Disorders
  • Calcium, Bone, and Mineral Metabolism Disorders
  • Cardiac Arrhythmias
  • Cardiovascular Emergencies
  • Chromosomal Disorders
  • Cognitive and Behavioural Neurology
  • Connective Tissue Diseases
  • Crystal Arthropathies
  • Diabetes Mellitus
  • Eczematous (Dermatitis)
  • Fibromyalgia and Chronic Pain Syndromes
  • Gastrointestinal / Hepatic emergencies
  • Genetic Connective Tissue Disorders
  • Genitourinary & STIs
  • Genitourinary Cancers
  • Glomerular Diseases (Glomerulopathies)
  • Gynaecological Conditions
  • Heart Failure
  • Immunodeficiency Disorders
  • Infection & Sepsis
  • Infectious Disease / Sepsis
  • Infectious Disease & Immunisation
  • Infectious Respiratory Diseases
  • Infectious Skin Diseases
  • Inflammatory and Autoimmune Conditions
  • Inflammatory Arthritis
  • Lung Cancer
  • Macrophage Activation Syndrome
  • Mechanical and Degenerative Joint Diseases
  • Mechanical and Degenerative Joint Diseases
  • Multisystem / Systemic Diseases Relevant to Rheumatology
  • Musculoskeletal & Orthopaedics
  • Musculoskeletal Injuries (Acute and Overuse)
  • Nephrology Paediatrics
  • Neurological Emergencies
  • Neuromuscular Disorders
  • Obstetric Conditions
  • Overtraining and Biomechanical Syndromes
  • Paediatric Orthopaedic
  • Paediatric Rheumatology
  • Primary Immunodeficiency Disorders
  • Pulmonary Disease in Rheumatology
  • Respiratory Tract Infections
  • Rheumatological Orthopaedics
  • Tendinopathies and Enthesopathies
  • Thoracic and Lung Cancers
  • Thyroid Disorders
  • Tumours and Malignant Skin Conditions
  • Upper Limb Trauma & Fracture
  • Valvular Heart Disease
  • Vascular Surgical Emergencies
  • Vasculitides
YouTube Video
Member early access
Video
Orthopaedics | Rheumatological Orthopaedics | Rheumatology

De Quervain’s tenosynovitis is a painful condition affecting the tendons on the thumb side of the wrist, particularly the abductor pollicis longus and extensor pollicis brevis, as they pass through the first dorsal compartment. It commonly develops from repetitive thumb and wrist movements and is often seen in caregivers and new parents due to frequent […]

YouTube Video
Member early access
Video
Inflammatory Arthritis | Rheumatology | Spine

Discover how to recognize sacroiliitis, its causes, imaging signs, and key mimics to improve diagnosis and patient care. In this video we define sacroiliitis, explain primary causes like axial spondyloarthritis (including ankylosing spondylitis), psoriatic arthritis, IBD-related spondyloarthritis, and reactive arthritis, and show how inflammatory back pain presents (insidious onset, night pain, morning stiffness, improves with […]

YouTube Video
Member early access
Video
Musculoskeletal & Orthopaedics | Rheumatology | Spine

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 […]

YouTube Video
Member early access
Video
Orthopaedics | Rheumatology

Frozen shoulder, medically known as adhesive capsulitis, is a condition characterised by stiffness, pain, and limited range of motion in the shoulder joint. It typically develops gradually and can significantly impact daily activities. The condition is often linked to inflammation and tightening of the shoulder capsule. Common in people aged 40 to 60, especially those […]

YouTube Video
Video
Rheumatology

Learn the underlying mechanism of Raynaud’s phenomenon, including how vascular spasm leads to color changes in response to cold or stress. This video explains the pathophysiology and differences between primary and secondary Raynaud’s.

YouTube Video
Video
Rheumatology

Vasculitis explained: learn types, causes, symptoms, and complications of blood vessel inflammation — including giant cell arteritis, Takayasu, Kawasaki, ANCA-associated vasculitis, IgA vasculitis, and anti-GBM disease. This concise video breaks down primary vs. secondary vasculitis and categorizes disorders by vessel size (large, medium, small), plus variable and single-organ vasculitides. Viewers will understand mechanisms (immune attack, […]

YouTube Video
Video
Rheumatology

Dermatomyositis is an autoimmune disease characterized by inflammation of the skin and muscles, resulting in distinctive rashes and muscle weakness. The disease involves the production of specific antibodies that mistakenly target muscle tissue.

YouTube Video
Video
Rheumatology

Inflammatory arthritis refers to a group of conditions characterised by a high number of white cells in the joints, causing inflammation, pain, redness, and swelling. Non-inflammatory arthritis typically refers to wear-and-tear joint problems, such as osteoarthritis. In this video, we will compare osteoarthritis (a classically non-inflammatory arthritis) to rheumatoid arthritis (a common inflammatory arthritis).

YouTube Video
Video
Endocrinology | Rheumatology

The English surgeon Sir James Paget first described chronic inflammation of bone as osteitis deformans in 1877. Paget’s disease of bone is a disorder of bone remodelling where there is an increase in bone turnover. What this means is that in the bone there is increased bone breakdown followed by increased bone formation, resulting in […]

YouTube Video
Video
Rheumatology | Sports Medicine

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.

YouTube Video
Video
Rheumatology | Sports Medicine

Learn about the common causes of lateral ankle pain, such as ligament sprains, peroneal tendon injuries, and chronic ankle instability. This video covers the relevant anatomy, symptoms, and key strategies for diagnosis, management, and recovery.

YouTube Video
Video
Rheumatology

Learn about Relapsing Polychondritis, a rare autoimmune disorder affecting cartilage in areas like the ears, nose, and respiratory tract. This video covers clinical features, pathophysiology, and current treatment approaches for effective diagnosis and management.

YouTube Video
Video
Clinical Anatomy | Rheumatology | Sports Medicine

Learn about piriformis syndrome, a neuromuscular condition where the piriformis muscle compresses the sciatic nerve, causing buttock pain and radiating leg discomfort. This video explains the anatomy, symptoms, underlying causes, and strategies for diagnosis and treatment.

YouTube Video
Video
Rheumatology | Sports Medicine

Trochanteric bursitis causes lateral hip pain, swelling, and tenderness—learn causes, diagnosis, and effective treatments for trochanteric bursitis and IT band–related pain. This clear, clinical guide explains how inflammation of the greater trochanteric bursa from overuse, muscle dysfunction, arthritis, or acute injury produces pain, snapping, and referred thigh symptoms, and how to distinguish it from stress […]

YouTube Video
Video
Orthopaedics | Rheumatology

Baker’s cysts, also known as popliteal cysts, are among the most common knee disorders. These fluid-filled cysts develop at the back of the knee in the popliteal fossa and result from the enlargement of the gastrocnemius-semimembranosus bursa, a bursa located between the gastrocnemius and semimembranosus muscles. Baker’s cysts typically form in adults due to knee […]

YouTube Video
Video
Endocrinology | Rheumatology

There are medications available to prevent and treat osteoporosis. Medications to prevent osteoporosis are only for those at high risk of osteoporosis, this includes those taking high dose of steroids for a long duration. If someone old has a fracture then usually they are started on medications for osteoporosis regardless of T score. Or if […]

YouTube Video
Video
Pharmacology | Rheumatology

Leflunomide is an immunosuppressant used to treat RA and psoriatic arthritis and Multiple sclerosis. Leflunomide is a prodrug that is rapidly and almost completely metabolized following oral administration to its pharmacologically active metabolite, A77 1726 or teriflunomide. The mechanism of action of leflunomide has not been fully determined, but appears to primarily Inhibit the mitochondrial […]

YouTube Video
Video
Immunology | Rheumatology | SLE Related Acute Complications

Hydroxychloroquine explained: how this disease-modifying antirheumatic drug (DMARD) treats autoimmune conditions and why it’s first-line for systemic lupus erythematosus. Hydroxychloroquine (plaquenil) is an antimalarial with powerful immunomodulatory effects used in SLE, rheumatoid arthritis, and juvenile inflammatory arthritis; it lowers mortality and reduces the risk of lupus nephritis by blocking antigen processing, T-cell activation, and autoantibody […]

YouTube Video
Video
Pharmacology | Rheumatology

Explore azathioprine, an immunosuppressive drug used in autoimmune diseases and organ transplantation. This video covers its pharmacology, mechanism of action in inhibiting purine synthesis, and common side effects including bone marrow suppression and gastrointestinal symptoms.

Become a member
Ready to take your education seriously?
Armando hasudungan brain logo
Armando Hasudungan
By Visualising Medicine
© 2026 Visualising Medicine. All rights reserved.
Types
  • All
  • Videos
  • Diseases
  • Clinical Presentations

Specialty

Specialty
  • Anatomy
  • Biochemistry
  • Cardiology
  • Cardiothoracic Surgery
  • Cell Biology
  • Chemistry
  • Clinical Anatomy
  • Colorectal Surgery
  • Critical Care Medicine
  • Dermatology
  • Ears, Nose, and Throat
  • Endocrinology
  • Gastroenterology
  • General Surgery
  • Genetics
  • Haematology
  • Immunology
  • Infectious Disease and Microbiology
  • Nephrology
  • Neurology
  • Neurosurgery
  • Obstetrics and Gynecology
  • Oncology
  • Opthalmology
  • Orthopaedics
  • Others
  • Paediatrics
  • Pathophysiology
  • Pharmacology
  • Physics
  • Physiology
  • Plastic Surgery
  • Project
  • Psychiatry
  • Pulmonology
  • Rheumatology
  • Sports Medicine
  • Upper Gastrointestinal Surgery
  • Urology
  • Vascular Surgery

Sub-specialty

Sub-specialty
  • Anaemias
  • Anaphylaxis and Hypersensitivity Reactions
  • Arthroplasty (Joint Replacement Surgery)
  • Bleeding and Clotting Disorders
  • Bone and Mineral Disorders
  • Calcium, Bone, and Mineral Metabolism Disorders
  • Cardiac Arrhythmias
  • Cardiovascular Emergencies
  • Chromosomal Disorders
  • Cognitive and Behavioural Neurology
  • Connective Tissue Diseases
  • Crystal Arthropathies
  • Diabetes Mellitus
  • Eczematous (Dermatitis)
  • Fibromyalgia and Chronic Pain Syndromes
  • Gastrointestinal / Hepatic emergencies
  • Genetic Connective Tissue Disorders
  • Genitourinary & STIs
  • Genitourinary Cancers
  • Glomerular Diseases (Glomerulopathies)
  • Gynaecological Conditions
  • Heart Failure
  • Immunodeficiency Disorders
  • Infection & Sepsis
  • Infectious Disease / Sepsis
  • Infectious Disease & Immunisation
  • Infectious Respiratory Diseases
  • Infectious Skin Diseases
  • Inflammatory and Autoimmune Conditions
  • Inflammatory Arthritis
  • Lung Cancer
  • Macrophage Activation Syndrome
  • Mechanical and Degenerative Joint Diseases
  • Mechanical and Degenerative Joint Diseases
  • Multisystem / Systemic Diseases Relevant to Rheumatology
  • Musculoskeletal & Orthopaedics
  • Musculoskeletal Injuries (Acute and Overuse)
  • Nephrology Paediatrics
  • Neurological Emergencies
  • Neuromuscular Disorders
  • Obstetric Conditions
  • Overtraining and Biomechanical Syndromes
  • Paediatric Orthopaedic
  • Paediatric Rheumatology
  • Primary Immunodeficiency Disorders
  • Pulmonary Disease in Rheumatology
  • Respiratory Tract Infections
  • Rheumatological Orthopaedics
  • Tendinopathies and Enthesopathies
  • Thoracic and Lung Cancers
  • Thyroid Disorders
  • Tumours and Malignant Skin Conditions
  • Upper Limb Trauma & Fracture
  • Valvular Heart Disease
  • Vascular Surgical Emergencies
  • Vasculitides