12 inflamed vessels, organized by size. The one framework that makes every vasculitis question answerable.
THE FRAMEWORK
Vessel Size = Everything
clinical medicine organize vasculitis by the size of the vessels involved. Learn the size, learn the disease.
Every vasculitis question is really asking: "Which vessel size is inflamed?" The demographics, symptoms, labs, and histology all flow from that. Get the vessel size right and the rest falls into place.
🩸Large = aorta + major branches (Takayasu, GCA). Medium = named organ arteries (PAN, Kawasaki). Small = arterioles, venules, capillaries (ANCA-associated, immune complex).
🇯🇵
Takayasu Arteritis
"Pulseless disease"
Young Asian women + weak pulses + aortic thickening
Who
Women <40, especially Asian ancestry. Peak 15-45 years.
What happens
Granulomatous inflammation of the aorta and its major branches → vessel thickening → stenosis → diminished or absent pulses in the upper extremities.
Key findings
Weak/absent arm pulses ("pulseless disease")
Blood pressure difference >10 mmHg between arms
Carotid bruits, claudication, syncope
Constitutional symptoms (fever, malaise, weight loss, arthralgia) Erythema nodosum (can occur in Takayasu too!)
Granulomatous inflammation of the media with giant cells → same pattern as GCA, just in a different age group and different vessels.
Treatment
Corticosteroids. Methotrexate or tocilizumab for refractory cases.
🔑Takayasu = Teen/Thirties, Thready pulses, Thickened aortaLook for: narrowing/occlusion of aortic branches on angiography
Credit: Public Domain, Wikimedia Commons.
👵
Giant Cell (Temporal) Arteritis
GCA / Cranial arteritis
Women >50 + headache + jaw claudication + vision loss risk
Who
Women >50, European descent. Most common vasculitis in the elderly.
What happens
Granulomatous inflammation of medium-to-large arteries, especially the temporal artery and branches of the external carotidThe temporal artery is a branch of the external carotid. That's why the headache is unilateral and temporal → the inflamed artery runs right along the temple.. Can also affect the aorta.
Key findings
New-onset headache in patient >50 Jaw claudication → pain when chewing (ischemia of masseter) Vision loss → ophthalmic artery inflammation → anterior ischemic optic neuropathy. EMERGENCY → can become permanent/bilateral
Tender, thickened temporal artery (may be visible/palpable)
Often associated with polymyalgia rheumaticaPMR = bilateral shoulder/hip girdle pain and stiffness, especially in the morning. ~50% of GCA patients have PMR. ~15% of PMR patients develop GCA. They're closely linked. (bilateral shoulder/hip stiffness)
Labs & Diagnosis
ESR often >100. Definitive diagnosis = temporal artery biopsy (but skip lesions can cause false negatives → biopsy a long segment).
Histology
Granulomatous inflammation with multinucleated giant cells in the media, fragmented internal elastic lamina.
Treatment
High-dose corticosteroids IMMEDIATELY → don't wait for biopsy if vision is threatened. Steroids can be started before biopsy without affecting results for several days.
Look for: multinucleated giant cells in the media with fragmented internal elastic lamina
Credit: Nephron → CC BY-SA 3.0, Wikimedia Commons.
⚠️
Takayasu vs GCA → Same Histology, Different Patient
Both show granulomatous inflammation with giant cells. The difference is the patient: Takayasu = young woman (<40), Asian, absent pulses, aorta GCA = older woman (>50), European, headache + jaw claudication + vision loss, temporal artery
If the question says "granulomatous inflammation of a large artery" → check the age first.
💥
Polyarteritis Nodosa (PAN)
The one that spares the lungs
Middle-aged men + HBV + renal/GI/skin/neuro + fibrinoid necrosis
Who
Men, 40-60 years. Strong association with Hepatitis B.
What happens
Fibrinoid necrosis of medium-sized muscular arteries. Segmental, transmural inflammation. Lesions at different stages (acute + healing) in the same vessel.
Key findings
Multi-system: renal (HTN, renal failure → but NOT glomerulonephritis), GI (abdominal pain, bloody stool), skin (livedo reticularis, nodules, ulcers), neuro (mononeuritis multiplex → foot drop, wrist drop) DOES NOT affect lungs or glomeruli
Constitutional symptoms, fever, weight loss
Labs & Imaging
ANCA-negative (distinguishes from ANCA-associated vasculitides). Angiography shows microaneurysms ("string of pearls") in renal/mesenteric arteries. HBsAg positive in ~30%.
Histology
Fibrinoid necrosis of the vessel wall with transmural neutrophilic infiltration. Mixed-age lesions.
Treatment
Corticosteroids + cyclophosphamide. If HBV-associated: antivirals.
🔑PAN spares Pulmonary arteries and glomeruli. PAN = Please Avoid luNgs.Look for: fibrinoid necrosis of the vessel wall with transmural inflammation
Credit: Berardi et al → CC BY 4.0, Wikimedia Commons.
Children <5 years, especially Japanese/Asian descent. Most common vasculitis in children.
What happens
Acute inflammation of medium-sized arteries, particularly the coronary arteries. Can cause aneurysms → MI → sudden death in children.
Diagnostic criteria (5 of 5 + fever)
CRASH and Burn (mnemonic): Conjunctivitis (bilateral, non-purulent) Rash (polymorphous) Adenopathy (cervical, >1.5 cm, usually unilateral) Strawberry tongue / lip changes (red, cracked lips) Hand/foot changes (erythema → desquamation of fingers/toes)
+ Burn = Fever >5 days
Need fever + 4/5 criteria (or fever + <4 criteria + coronary changes)
Key complication
Coronary artery aneurysms → #1 cause of acquired heart disease in children in developed countries. Can rupture or thrombose → MI.
Treatment
IVIG + high-dose aspirin (one of the few times aspirin is used in children). Aspirin reduced to low-dose after fever resolves. IVIG within 10 days reduces coronary aneurysm risk from ~25% to ~5%.
All 5 diagnostic criteria visible: conjunctivitis, oral changes, rash, extremity changes, lymphadenopathy
Credit: Dong Soo Kim → CC BY-SA 4.0, Wikimedia Commons.
Small vessel vasculitides split into two groups: ANCA-associated (pauci-immune → no immune complexes) and immune complex-mediated.
ANCA-ASSOCIATED
👃
Granulomatosis with Polyangiitis (GPA)
Formerly Wegener's
c-ANCA/PR3 + upper airway + lungs + kidneys
What happens
Necrotizing granulomatous inflammation of upper airways, lungs, and kidneys. The trifecta.
Key findings
Upper airway: Chronic sinusitis, epistaxis, nasal crusting, saddle nose deformity (cartilage destruction), otitis media Lungs: Hemoptysis, cavitary nodules on CXR, pulmonary hemorrhage Kidneys:Rapidly progressive glomerulonephritisRPGN = crescent-shaped cellular proliferation in Bowman's space. Presents as rapidly declining renal function with hematuria + proteinuria. Pauci-immune type (no immune complexes on IF). (pauci-immune crescentic GN)
Labs
c-ANCA (anti-PR3) → cytoplasmic staining pattern. Positive in ~90% of active generalized disease.
Treatment
Rituximab or cyclophosphamide + corticosteroids for induction. Maintenance: rituximab, azathioprine, or methotrexate.
Look for: saddle nose deformity from nasal cartilage destruction → classic GPA finding
Credit: Kawabata et al → CC BY 3.0, Wikimedia Commons.
🫁
Microscopic Polyangiitis (MPA)
The one WITHOUT granulomas
p-ANCA/MPO + lungs + kidneys + NO granulomas + NO upper airway
What happens
Necrotizing vasculitis of small vessels → affects lungs and kidneys like GPA, but NO granulomas and NO upper airway disease.
Key findings
Lungs: Pulmonary hemorrhage, hemoptysis Kidneys: Pauci-immune crescentic GN (same as GPA) NO nose/sinus involvement → this is the key difference from GPA
Often presents as pulmonary-renal syndrome
Labs
p-ANCA (anti-MPO) → perinuclear staining pattern.
vs GPA
Both affect lungs + kidneys. GPA has granulomas + upper airway + c-ANCA. MPA has NO granulomas + NO upper airway + p-ANCA.
🌬️
Eosinophilic GPA (EGPA)
Formerly Churg-Strauss
p-ANCA + asthma + eosinophilia + granulomas
What happens
Eosinophil-rich granulomatous inflammation of small-medium vessels. Occurs in patients with a history of asthma or allergic disease.
Key findings
Late-onset asthma (almost always present before vasculitis develops) Peripheral eosinophilia (often very high, >10%)
Eosinophilic infiltrates in lungs, GI, skin
Peripheral neuropathy (mononeuritis multiplex)
Cardiac involvement (eosinophilic myocarditis → major cause of death)
Labs
p-ANCA (anti-MPO) positive in ~40-60%. Elevated IgE. Eosinophilia is the hallmark.
Children 3-10 years. Most common vasculitis in children. Often follows an upper respiratory infection.
What happens
IgA immune complex deposition in small vessel walls → complement activation → inflammation.
Classic tetrad
Palpable purpura on legs and buttocks (gravity-dependent → NOT thrombocytopenic) Abdominal pain (colicky, GI bleeding, intussusception risk) Arthralgia (knees, ankles) Renal disease (IgA nephropathy → hematuria, proteinuria)
Labs
Platelet count is NORMAL (the purpura is from vasculitis, not low platelets). Elevated IgA. Skin biopsy: IgA deposition on immunofluorescence.
Treatment
Usually self-limited in children. Supportive care. Steroids for severe GI or renal involvement.
🔥
Behçet Disease
"Silk Road disease"
Oral ulcers + genital ulcers + uveitis + along the Silk Road
Who
Young men, 20-40. Most common in Turkey, Middle East, East Asia (Silk Road countries). Associated with HLA-B51.
Classic triad
Recurrent oral aphthous ulcers (required for diagnosis) Genital ulcers (painful) Uveitis (anterior or posterior → can cause blindness)
Other
Pathergy → needle prick → exaggerated skin reaction (papule/pustule at puncture site). Positive pathergy test is suggestive. Also: skin lesions (erythema nodosum), DVT, arterial aneurysms, CNS involvement.
🚬
Buerger Disease
Thromboangiitis obliterans
Young male smoker + digit ischemia + Raynaud's
Who
Young men (<45), heavy smokers. Rare in nonsmokers.
What happens
Segmental thrombosing vasculitis of small and medium arteries/veins in the hands and feet. Inflammation with thrombosis but vessel wall architecture is preserved.
Key findings
Digit claudication, Raynaud phenomenon
Gangrene of fingers/toes
Migratory superficial thrombophlebitis MUST stop smoking → only treatment that halts progression
THE CHEAT SHEET
ANCA Quick Reference
ANCA Pattern
Target
Disease
Key Feature
c-ANCA
PR3 (proteinase 3)
GPA (Wegener's)
Saddle nose + lungs + kidneys
p-ANCA
MPO (myeloperoxidase)
MPA
Lungs + kidneys, NO granulomas, NO upper airway
p-ANCA
MPO
EGPA (Churg-Strauss)
Asthma + eosinophilia
Negative
→
PAN
HBV + microaneurysms + spares lungs
Negative
→
Kawasaki
Child <5 + coronary aneurysms
⚠️
PAN vs MPA → The Lung Question
Both affect small/medium vessels. Both cause renal disease and systemic symptoms. But: PAN: ANCA-negative, spares lungs and glomeruli, HBV, microaneurysms MPA: p-ANCA positive, DOES affect lungs and glomeruli, no granulomas
If the question says "vasculitis + lung involvement" → it's NOT PAN.
GAME TIME
Vessel Size Sorting
Drag each disease to its correct vessel size category.
Large Vessel
Medium Vessel
Small Vessel
VILLAIN CARDS
The Big 8 Vasculitides
Tap a tab to load the profile. Board trap on every card.
LARGE VESSEL
Giant Cell Arteritis (GCA)
Temporal / cranial arteritis
Who
Women >50 · European descent · most common vasculitis in elderly
Buzzword
New headache >50 + jaw claudication + vision loss risk
Histology
Granulomatous inflammation + multinucleated giant cells in the media
Treatment
High-dose steroids NOW · don't wait for biopsy if vision threatened
Board Trap
50% association with polymyalgia rheumatica. ESR >100. Temporal artery biopsy confirms but skip lesions can be false-negative → biopsy a long segment. Start steroids the same visit you suspect GCA if vision is at risk.
🔑 Memory hookGCA = "Grandmother Can't Chew Anything" → elderly woman, jaw claudication, temporal artery. The nightmare: vision loss from ophthalmic artery occlusion. Start steroids the same hour you suspect it.
LARGE VESSEL
Takayasu Arteritis
"Pulseless disease"
Who
Women <40 · Asian ancestry · peak 15-45 years
Buzzword
Weak/absent arm pulses + BP difference >10 between arms + carotid bruits
Histology
Granulomatous inflammation + giant cells of aorta/branches · same as GCA, different patient
Treatment
Corticosteroids · methotrexate or tocilizumab for refractory
Board Trap
Same histology as GCA. The separator is age: Takayasu <40, GCA >50. Both are granulomatous. Young Asian woman + absent pulses + aortic stenosis = Takayasu.
🔑 Memory hookThree T's: Teen/Thirties, Thready pulses, Thickened aorta. Japanese/Asian woman who reaches for something and feels nothing in her arm.
Fibrinoid necrosis of medium arteries · mixed-age lesions (acute + healing in same vessel)
Labs
ANCA negative · "string of pearls" = microaneurysms on angiography
Board Trap
PAN does NOT affect lungs or glomeruli. If the stem mentions lung involvement in medium-vessel disease = not PAN. Foot drop (mononeuritis multiplex) from nerve ischemia is classic PAN.
🔑 Memory hookPAN = "Please Avoid luNgs." HBV + ANCA-negative + microaneurysms = PAN every time. No lungs, no glomeruli, no ANCA.
MEDIUM VESSEL
Kawasaki Disease
Mucocutaneous lymph node syndrome
Who
Children <5 years · Japanese/Asian · most common vasculitis in children
Coronary artery aneurysms · #1 acquired heart disease in children in US
Treatment
IVIG + high-dose aspirin (one of the few times aspirin is given to children)
Board Trap
IVIG within 10 days reduces coronary aneurysm risk from ~25% to ~5%. The "no aspirin in children" rule has this exception. Aspirin is mandatory.
🔑 Memory hookCRASH and Burn: Conjunctivitis, Rash, Adenopathy, Strawberry tongue/lips, Hands/feet + Burn = Fever >5 days. The real fear is coronary aneurysms forming silently. IVIG within 10 days = the intervention that prevents a heart attack in a toddler.
SMALL VESSEL · ANCA+
Granulomatosis with Polyangiitis (GPA)
Formerly Wegener's
Antibody
c-ANCA (anti-PR3) · cytoplasmic pattern · positive in ~90% active disease
Necrotizing granulomas · pauci-immune crescentic GN (no immune complexes on IF)
Treatment
Rituximab or cyclophosphamide + steroids for induction
Board Trap
Only ANCA vasculitis that hits the UPPER airway. Saddle nose, nasal crusting, chronic sinusitis + lung + kidney = GPA. MPA and EGPA do NOT cause upper airway disease.
🔑 Memory hookGPA goes top to bottom: Nose → Lung → Kidney. c-ANCA is the name tag. No other ANCA vasculitis destroys nasal cartilage. Saddle nose = GPA.
SMALL VESSEL · ANCA+
Microscopic Polyangiitis (MPA)
The one WITHOUT granulomas
Antibody
p-ANCA (anti-MPO) · perinuclear pattern
Buzzword
Lungs + kidneys + NO granulomas + NO upper airway
vs GPA
GPA: c-ANCA, granulomas, saddle nose. MPA: p-ANCA, NO granulomas, NO upper airway
Presentation
Pulmonary-renal syndrome: hemoptysis + RPGN · pauci-immune crescentic GN
Board Trap
MPA vs GPA: both hit lungs and kidneys, both pauci-immune. Separators: upper airway = GPA, no upper airway = MPA. Granulomas = GPA, no granulomas = MPA. c-ANCA = GPA, p-ANCA = MPA.
Eosinophilic myocarditis = major cause of death in EGPA
Board Trap
Asthma MUST precede the vasculitis for EGPA. No asthma history = not EGPA. Eosinophilia is the hallmark. Mononeuritis multiplex (foot drop) is classic in the vasculitic phase.
🔑 Memory hookEGPA = "Eosinophils Gone Political." Three acts: allergic → eosinophilic → vasculitic. Always asthma first. If no asthma, it's not EGPA.
SMALL VESSEL · IMMUNE COMPLEX
IgA Vasculitis (HSP)
Henoch-Schonlein Purpura
Who
Children 3-10 · most common childhood vasculitis · often post-URI
Normal platelets · elevated IgA · skin biopsy: IgA deposits on IF
Treatment
Usually self-limited · supportive care · steroids for severe GI/renal
Board Trap
Normal platelet count despite purpura. Purpura is from vasculitis (IgA immune complexes), not thrombocytopenia. ITP has LOW platelets. HSP has NORMAL platelets. This distinction is THE board question.
🔑 Memory hookHSP = palpable (raised) purpura + belly pain + joint pain + kidney in a child after URI. Normal platelets. The purpura is raised because it's from inflamed vessels, not flat petechiae from platelet deficiency.
THE ALGORITHM
Vasculitis Decision Tree
Follow the clues from the stem. Work to the diagnosis one step at a time.
Step 1: What vessel size is affected?
MEMORY HOOKS
12 Associations That Stick
🧠
GCA vs Takayasu: same histology, different patient. How to never mix them up?
Both have granulomatous inflammation with giant cells. The separator is one number: 50. Takayasu is UNDER 50 (Asian woman, aorta, pulseless). GCA is OVER 50 (older European woman, temporal artery, jaw pain). Check the age first.
👁
GCA and vision: why is this the emergency and not just "monitor it"?
The ophthalmic artery is a branch of the internal carotid. GCA inflames it → anterior ischemic optic neuropathy → sudden, permanent, bilateral blindness. The window to prevent this is hours. Start steroids the same visit you suspect GCA, before the biopsy comes back.
🫀
Why does PAN cause foot drop (mononeuritis multiplex)?
Mononeuritis multiplex = infarction of individual peripheral nerves from ischemia of the vasa nervorum (tiny arteries feeding the nerve). PAN inflames medium-sized muscular arteries including the vasa nervorum. Foot drop = peroneal nerve. Wrist drop = radial nerve. Each nerve dies asymmetrically because different arteries infarct at different times.
🩸
PAN: why does the kidney fail WITHOUT glomerulonephritis?
PAN hits the medium-sized renal arteries, not glomerular capillaries. Result: renal infarction (blood supply cut off) rather than glomerular inflammation (pipe bursting inside). That's why PAN causes HTN + renal failure but NO hematuria on UA and NO red cell casts. If you see renal involvement with red cell casts = it's NOT PAN.
🧒
Kawasaki: why is aspirin used in a child when it's usually forbidden?
The "no aspirin in kids" rule exists because of Reye syndrome (aspirin + viral infection = hepatic encephalopathy). But in Kawasaki, the anti-inflammatory and antiplatelet effects outweigh the Reye risk. The disease itself poses higher mortality from coronary thrombosis. IVIG + aspirin = standard of care.
🧬
c-ANCA vs p-ANCA: which pattern goes with which disease?
c-ANCA (cytoplasmic) = anti-PR3 = GPA (Wegener's) → saddle nose + upper airway destruction. p-ANCA (perinuclear) = anti-MPO = MPA and EGPA → lungs + kidneys, no nose. Memory: "c-ANCA = crushed nose" and "p-ANCA = peripheral (lungs/kidneys), no nose."
🧼
HSP: how is palpable purpura different from thrombocytopenic purpura?
Palpable purpura = raised off the skin. Inflamed vessel walls leak inflammatory cells into the dermis, creating a bumpy, raised texture. Thrombocytopenic purpura (ITP) is flat and smooth. The clinical medicine will give you normal platelet count to force you to recognize this. Raised purpura on lower extremities of a child after a URI = HSP.
💨
EGPA: what makes this the only ANCA vasculitis with a clear precursor phase?
EGPA follows a 3-act progression: 1) Allergic phase (years of asthma, rhinitis, nasal polyps), 2) Eosinophilic phase (eosinophils infiltrate lungs, GI, heart), 3) Vasculitic phase (systemic small-vessel vasculitis). The clinical medicine always mention the asthma history. That's the only ANCA vasculitis where pre-existing allergic disease is a diagnostic requirement.
🧰
Behcet's: what is the pathergy test and why is it positive?
Pathergy = a needle prick creates an exaggerated skin reaction (pustule or papule) within 24-48 hours. It's a vascular hyperreactivity to minor trauma, reflecting the underlying vessel inflammation. No other common disease causes pathergy. Turkish/Middle Eastern man + oral ulcers + genital ulcers + uveitis + positive pathergy = Behcet's.
🚬
Buerger's: why does quitting smoking actually stop the disease?
Buerger disease is directly triggered by tobacco. The vessel inflammation is driven by a hypersensitivity response to tobacco antigens. Stop tobacco completely (cigarettes, vapes, patches, chew) = disease halts. ANY nicotine = disease continues. This is the only vasculitis where treatment is "remove the trigger," not immunosuppression.
🎯
GPA saddle nose: what is actually happening to the cartilage?
GPA causes necrotizing granulomatous inflammation that destroys cartilage. The nasal septum and turbinate cartilage break down. The bridge of the nose collapses inward, creating the classic saddle-shaped deformity. It takes months to years to develop. Board shorthand: saddle nose + sinusitis + hemoptysis + RPGN = GPA until proven otherwise.
🪑
Takayasu "string sign" vs PAN "string of pearls": what's the visual difference?
Takayasu = narrowings and stenosis in the aorta/branches (the walls thicken inward). "String sign" = the lumen looks thread-thin. PAN = microaneurysms in medium vessels (the walls blow outward). "String of pearls" = alternating bulges along a renal/mesenteric artery. One is squeezing, one is ballooning. Completely different mechanisms.
CLINICAL IMAGES
What to Recognize in clinical practice
📷 GCA: giant cells in temporal artery biopsy · tap to expand
📷 Kawasaki: clinical features in a child · tap to expand
📷 HSP: palpable purpura, lower extremities · tap to expand
📷 GPA: saddle nose from cartilage destruction · tap to expand
📷 GPA: cavitating pulmonary nodules on CXR · tap to expand
A 32-year-old woman who recently immigrated from Japan presents with 3 months of night sweats, malaise, and joint pain. She's lost 6 kg. Exam: weak brachial and radial pulses. Carotid bruits bilaterally. ESR: 96 mm/h. CT chest: thickening and narrowing of the aortic arch.
Microscopic exam of the aortic arch would most likely show:
A. Calcification of the media
B. Fibrinoid necrosis of the intima and media
C. Subendothelial immune complex deposition
D. Subendothelial hyaline deposition
E. Granulomatous inflammation of the media
VILLAIN CARDS
The Lineup
Tap a card to flip it.
👁
GCA
Large Vessel
tap to reveal
Giant Cell Arteritis
WhoWomen >50, European descent, most common vasculitis in elderly
VesselsTemporal, ophthalmic, carotid branches
PresentationNew headache >50, jaw claudication, vision loss risk
Labs/PathESR >100, granulomatous inflammation + giant cells in media
TreatmentHigh-dose steroids NOW, don't wait for biopsy if vision threatened
Board pearl50% association with polymyalgia rheumatica. Biopsy a long segment (skip lesions).
💪
Takayasu
Large Vessel
tap to reveal
Takayasu Arteritis
WhoWomen <40, Asian ancestry, peak 15-45 yrs
VesselsAorta and major branches
PresentationAbsent arm pulses, BP difference >10 mmHg between arms, carotid bruits
Labs/PathGranulomatous, same histology as GCA. Age separates them.
TreatmentCorticosteroids, methotrexate or tocilizumab for refractory
Board pearlYoung Asian woman + pulseless arm = Takayasu. GCA >50, Takayasu <40.
❤️
Kawasaki
Medium Vessel
tap to reveal
Kawasaki Disease
WhoChildren <5, Japanese/Asian ancestry, most common vasculitis in kids
PresentationPalpable purpura + arthralgias + low complement (C4) + Hep C history
Labs/PathPositive rheumatoid factor, cryoglobulins precipitate in cold, low C4 (classic)
TreatmentTreat underlying Hep C (direct-acting antivirals), rituximab for severe disease
Board pearlLow C4 + purpura + Hep C = cryoglobulinemia. The cold precipitation test confirms cryoglobulins.
PROVE IT
Clinical Vignettes
6 patients with angry vessels. Name the disease.
Vessels respected.
Medically reviewed by Kaitlyn Cocuzzo, MD and Fatima Ali, DO · Last updated July 5, 2026 at 8:17 PM ET
Bone Wizardry is an independent educational resource for visual learning in the medical sciences. It is not affiliated with, endorsed by, or sponsored by any licensing or examination board, contains no real or recalled examination questions, and does not guarantee any educational or examination outcome.
