KLINIKFUCHS › Spot-diagnosis quiz › Inflammatory & autoimmune skin diseaseDermatology spot-diagnosis quiz: Inflammatory & autoimmune skin disease
Eczema, psoriasis, acne, urticaria, bullous and connective tissue dermatoses – 58 real clinical images from Wikimedia Commons. Pick the best diagnosis for each case; the answer links to the knowledge base where available.
Correct: 0 of 0 answered · 58 cases
Case 1 of 58
Dr. Thomas Brinkmeier, „Acne inversa, Hurley-Stadium II, ©WIKIDERM", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Hidradenitis suppurativa (acne inversa) Carbuncle Eccrine hidrocystoma Inverse psoriasis
Answer: Hidradenitis suppurativa (acne inversa) · More on Hidradenitis suppurativa (acne inversa) in the knowledge base →
Case 2 of 58
Sedef94, „Kürəkdə düyünlü və kistik sızanaqlar (Acne Vulgaris) 08", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Rosacea Malassezia folliculitis Acne vulgaris Comedonal acne
Answer: Acne vulgaris · More on Acne vulgaris in the knowledge base →
Case 3 of 58
Gzzz, „Atopic dermatitis child 2", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Contact dermatitis Atopic dermatitis Psoriasis vulgaris (plaque psoriasis) Urticaria
Answer: Atopic dermatitis · More on Atopic dermatitis (atopic eczema) in the knowledge base →
Case 4 of 58
Wikimedia-Nutzer, CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Phytophotodermatitis Actinic reticuloid Sunburn Phototoxic dermatitis
Answer: Sunburn
Case 5 of 58
Inwe (Wikimedia Commons), „Dyshidrosis", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Dyshidrotic hand eczema (pompholyx) Contact dermatitis Palmoplantar psoriasis Tinea manuum
Answer: Dyshidrotic hand eczema (pompholyx)
Case 6 of 58
JIP, „Eczema on knuckle", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Scabies Contact dermatitis Hand eczema Palmoplantar psoriasis
Answer: Hand eczema
Case 7 of 58
Aceofhearts1968, „Pityriasis rosea-1", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Pityriasis versicolor Lichen planus Tinea corporis Pityriasis rosea
Answer: Pityriasis rosea · More on Pityriasis rosea in the knowledge base →
Case 8 of 58
James Heilman, MD, „Lip licker's dermatitis", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Perioral dermatitis Demodicosis Rosacea fulminans / pyoderma faciale Rosacea
Answer: Perioral dermatitis · More on Perioral dermatitis in the knowledge base →
Case 9 of 58
kilbad, „Poikiloderma vasculare atrophicans 1", CC BY 3.0, via Wikimedia Commons · CC BY 3.0 · Source Which diagnosis fits best?
Dermatomyositis Poikiloderma Mycosis fungoides Lupus erythematosus (butterfly rash)
Answer: Poikiloderma
Case 10 of 58
MediaJet, CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Tinea corporis Pityriasis rosea Psoriasis vulgaris (plaque psoriasis) Atopic dermatitis
Answer: Psoriasis vulgaris (plaque psoriasis) · More on Psoriasis vulgaris (plaque psoriasis) in the knowledge base →
Case 11 of 58
Richard Keatinge, „Guttate psoriasis 66 year old male", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Pityriasis rosea Tinea corporis Nummular eczema Guttate psoriasis
Answer: Guttate psoriasis
Case 12 of 58
MCvanVeen, „Psoriasis July 2016", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Palmoplantar psoriasis Erythrodermic psoriasis Guttate psoriasis Dyshidrotic hand eczema (pompholyx)
Answer: Palmoplantar psoriasis
Case 13 of 58
James Heilman, MD, „Rhinopyma", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Acne vulgaris Basal cell carcinoma Cutaneous sarcoidosis Rhinophyma
Answer: Rhinophyma
Case 14 of 58
Roymishali, „Seborrhoeic dermatitis highres", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Psoriasis vulgaris (plaque psoriasis) Seborrhoeic dermatitis Tinea corporis Darier disease (keratosis follicularis)
Answer: Seborrhoeic dermatitis · More on Seborrhoeic dermatitis in the knowledge base →
Case 15 of 58
Gzzz, „Urticaria child“, CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Papular urticaria Urticaria Angioedema Urticarial vasculitis
Answer: Urticaria · More on Mastocytosis (urticaria pigmentosa) in the knowledge base →
Case 16 of 58
Dr. Thomas Brinkmeier, „Acne conglobata, Rücken, ©WIKIDERM", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Acne conglobata Acne fulminans Hidradenitis suppurativa (acne inversa) Eccrine hidrocystoma
Answer: Acne conglobata
Case 17 of 58
Tinss, „Lichen amyloidosis on leg 1", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Lichen amyloidosus Dermatomyositis Angioedema Limited systemic sclerosis (CREST syndrome)
Answer: Lichen amyloidosus
Case 18 of 58
Sgamer1770, „Rash of amoxicillin use during EBV infection", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Maculopapular drug eruption Urticaria Secondary syphilis Measles
Answer: Maculopapular drug eruption
Case 19 of 58
Casablanca1950, „Balanite de Noon", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Bowen disease Lichen planus Fixed drug eruption (FDE) Zoon balanitis (plasma cell balanitis)
Answer: Zoon balanitis (plasma cell balanitis)
Case 20 of 58
Hansmuller, „Bullous pemphigoid - male patient - 88 years old, 2005", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Bullous pemphigoid Pemphigus vulgaris TEN (toxic epidermal necrolysis) Epidermolysis bullosa acquisita
Answer: Bullous pemphigoid
Case 21 of 58
Mohammad2018, „Discoid lupus etythermayouses new image", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Sarcoidosis Discoid lupus erythematosus (CDLE) Basal cell carcinoma Psoriasis vulgaris (plaque psoriasis)
Answer: Discoid lupus erythematosus (CDLE)
Case 22 of 58
BallenaBlanca, „Dermatitis Herpetiforme 2", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Atopic dermatitis Pemphigus vulgaris Urticaria Dermatitis herpetiformis (Duhring)
Answer: Dermatitis herpetiformis (Duhring)
Case 23 of 58
Szymański, Kowalewski, Pietrzyk et al. (2023), „Case Report: Biological treatment of epidermolysis bullosa acquisita: report on four cases and literature review", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Epidermolysis bullosa acquisita Linear IgA dermatosis Pemphigus vulgaris GPP / von Zumbusch pustular psoriasis
Answer: Epidermolysis bullosa acquisita · More on Epidermolysis bullosa acquisita in the knowledge base →
Case 24 of 58
James Heilman, MD, CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Erythema multiforme minor Pityriasis rosea Secondary syphilis Eczema herpeticum
Answer: Erythema multiforme minor
Case 25 of 58
Daniel Ullrich, Threedots, „Raupendermatitis", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Plant contact dermatitis Insect bite reaction Caterpillar dermatitis from the oak processionary moth (Thaumetopoea processionea) Urticaria
Answer: Caterpillar dermatitis from the oak processionary moth (Thaumetopoea processionea)
Case 26 of 58
Radhi, Almamoori (2026), „Preferential Localization of Fixed Drug Eruption Over a Cosmetic Red Lip Tattoo", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Contact dermatitis Phototoxic dermatitis Fixed drug eruption (FDE) Herpes simplex labialis
Answer: Fixed drug eruption (FDE)
Case 27 of 58
Kreuter et al., „Generalized granuloma annulare", CC BY-SA 2.0, via Wikimedia Commons · CC BY-SA 2.0 · Source Which diagnosis fits best?
Tinea corporis Granuloma faciale Granuloma annulare Psoriasis vulgaris (plaque psoriasis)
Answer: Granuloma annulare · More on Granuloma annulare in the knowledge base →
Case 28 of 58
Cho, Fu, Chen et al. (2022), „Clinical, Histopathologic, and Immunohistochemical Features of Patients with IgG/IgA Pemphigus", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Candidal intertrigo Erythrasma Pemphigus foliaceus (drug-induced, antihypertensive medication) IgA pemphigus
Answer: IgA pemphigus
Case 29 of 58
myself (Commons-Benutzername, Klartextname nicht angegeben), „Intertrigo", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Intertrigo Seborrhoeic dermatitis Tinea cruris Candidal intertrigo
Answer: Intertrigo
Case 30 of 58
SeSchu, „Diptam phototoxic", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Airborne contact dermatitis Tinea corporis Plant contact dermatitis Contact dermatitis
Answer: Plant contact dermatitis
Case 31 of 58
Dr.khatmando, „Severe contact dermatitis buprenorphine transdermal patch", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Psoriasis vulgaris (plaque psoriasis) Atopic dermatitis Contact dermatitis Dyshidrotic hand eczema (pompholyx)
Answer: Contact dermatitis
Case 32 of 58
Nowack et al., „Cutaneous findings in systemic sarcoidosis“, CC BY-SA 2.0, via Wikimedia Commons · CC BY-SA 2.0 · Source Which diagnosis fits best?
Granuloma annulare Lupus erythematosus (butterfly rash) Sarcoidosis Rosacea
Answer: Sarcoidosis · More on Cutaneous sarcoidosis in the knowledge base →
Case 33 of 58
James Heilman, MD, „LV22010 (leukocytoclastic vasculitis)“, CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
IgA vasculitis Purpura fulminans Leukocytoclastic vasculitis Polyarteritis nodosa
Answer: Leukocytoclastic vasculitis · More on Leukocytoclastic vasculitis in the knowledge base →
Case 34 of 58
James Heilman, MD, „Lichen Planus (2)", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Lichen planus Granuloma annulare Dyshidrotic hand eczema (pompholyx) Atopic dermatitis
Answer: Lichen planus · More on Lichen planus in the knowledge base →
Case 35 of 58
Squeakycatta, „Before Magnesium Chloride", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Hailey-Hailey disease Inverse psoriasis Pyoderma gangrenosum Atopic dermatitis
Answer: Hailey-Hailey disease
Case 36 of 58
Seenms, „Luszczyca paznokcia", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Green nail syndrome Nail psoriasis Palmoplantar psoriasis Psoriatic arthritis
Answer: Nail psoriasis · More on Nail psoriasis in the knowledge base →
Case 37 of 58
Warfieldian, „Necrobiosislipoidica", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Cutaneous sarcoidosis Limited systemic sclerosis (CREST syndrome) Necrobiosis lipoidica Erythema ab igne
Answer: Necrobiosis lipoidica · More on Necrobiosis lipoidica in the knowledge base →
Case 38 of 58
James Heilman, MD, „Leukocytoclastic vasculitis caused by reaction to minocycline", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Urticarial vasculitis Necrotising (leukocytoclastic) vasculitis Livedo racemosa Livedo reticularis
Answer: Necrotising (leukocytoclastic) vasculitis · More on Leukocytoclastic vasculitis in the knowledge base →
Case 39 of 58
PhilipPirrip, „Dissecting cellulitis of the scalp - perifolliculitis capitis abscedens et suffodiens - Hoffman disease - 40yo male of African descent", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Abscess Acne conglobata Dissecting cellulitis of the scalp (perifolliculitis capitis abscedens et suffodiens, Hoffmann) Carbuncle
Answer: Dissecting cellulitis of the scalp (perifolliculitis capitis abscedens et suffodiens, Hoffmann)
Case 40 of 58
Dragan Marjanovic, „Phytophotodermatitis-Severe-Case", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Contact dermatitis Phototoxic reaction Lupus erythematosus (butterfly rash) Urticaria
Answer: Phototoxic reaction · More on Phototoxic reaction in the knowledge base →
Case 41 of 58
Ivo Kruusamägi, „Contact with Heracleum sosnowskyi", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Phototoxic dermatitis Plant contact dermatitis Urticaria Phytophotodermatitis
Answer: Phototoxic dermatitis
Case 42 of 58
Masryyy, „Nodularis prurigo", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Papular urticaria Nummular eczema Prurigo nodularis Dyshidrotic hand eczema (pompholyx)
Answer: Prurigo nodularis
Case 43 of 58
Ahithopel, „Inverse psoriasis", CC0, via Wikimedia Commons · CC0 · Source Which diagnosis fits best?
Intertrigo Seborrhoeic dermatitis Hidradenitis suppurativa (acne inversa) Inverse psoriasis
Answer: Inverse psoriasis
Case 44 of 58
Fiji350 (English Wikipedia), „PUPPP-abdomen", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Dyshidrotic hand eczema (pompholyx) PUPPP (polymorphic eruption of pregnancy) Pemphigoid gestationis Urticaria
Answer: PUPPP (polymorphic eruption of pregnancy)
Case 45 of 58
Țetcu Mircea Rareș, „Pyoderma gangrenosum (2)", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Pyoderma gangrenosum Martorell ulcer Diabetic dermopathy Arterial (ischaemic) ulcer
Answer: Pyoderma gangrenosum · More on Pyoderma gangrenosum in the knowledge base →
Case 46 of 58
AfroBrazilian, „Necrolysis epidermalis toxica 01", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Impetigo Fixed drug eruption (FDE) TEN (toxic epidermal necrolysis) Pemphigus vulgaris
Answer: TEN (toxic epidermal necrolysis)
Case 47 of 58
James Heilman, MD, „CREST syndrome (calcinosis and sclerodactyly)", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Systemic sclerosis Morphoea Limited systemic sclerosis (CREST syndrome) Lichen sclerosus
Answer: Limited systemic sclerosis (CREST syndrome)
Case 48 of 58
James Heilman, „CREST2015.JPG", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Lupus erythematosus (butterfly rash) Cutis laxa Scleredema (Buschke) Systemic sclerosis
Answer: Systemic sclerosis
Case 49 of 58
James Heilman, MD, „EMminor2010", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Urticarial vasculitis Urticaria Giant urticaria Atopic dermatitis
Answer: Giant urticaria · More on Urticaria in the knowledge base →
Case 50 of 58
unbekannt (Commons-Nutzer), „Darier's disease", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Acne conglobata Seborrhoeic dermatitis Ichthyosis Darier disease (keratosis follicularis)
Answer: Darier disease (keratosis follicularis)
Case 51 of 58
Jim France, „Erythema annulare centrifugum", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Urticaria Granuloma annulare Erythema gyratum repens Erythema annulare centrifugum
Answer: Erythema annulare centrifugum · More on Erythema annulare centrifugum (EAC) in the knowledge base →
Case 52 of 58
unbekannt (Commons-Nutzer), „Facial eosinophilic granuloma 01", CC BY 2.0, via Wikimedia Commons · CC BY 2.0 · Source Which diagnosis fits best?
Lupus erythematosus (butterfly rash) Rosacea Dermatofibroma Granuloma faciale
Answer: Granuloma faciale
Case 53 of 58
unbekannt (gemeinfrei), via Wikimedia Commons · Public Domain · Source Which diagnosis fits best?
Erythema migrans (Lyme borreliosis) Erythema nodosum IgA vasculitis Polyarteritis nodosa
Answer: IgA vasculitis
Case 54 of 58
Mohammad2018, „Keratosis lichenoids chronichus1", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Erythema ab igne Keratosis lichenoides chronica Lichen nitidus Psoriasis vulgaris (plaque psoriasis)
Answer: Keratosis lichenoides chronica
Case 55 of 58
Mohammad2018, „IgA bullous dermatosis“, CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Linear IgA dermatosis Epidermolysis bullosa acquisita Psoriasis vulgaris (plaque psoriasis) Dermatitis herpetiformis (Duhring)
Answer: Linear IgA dermatosis
Case 56 of 58
Kelly McGauran, „Pityriasis Rubra Pilaris 10", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Lichen planus Pityriasis rubra pilaris Atopic dermatitis Mycosis fungoides
Answer: Pityriasis rubra pilaris · More on Pityriasis rubra pilaris in the knowledge base →
Case 57 of 58
James Heilman, MD, „Psoriatic arthritis2010", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Dermatomyositis Psoriatic arthritis GPP / von Zumbusch pustular psoriasis Subacute cutaneous lupus erythematosus (SCLE)
Answer: Psoriatic arthritis
Case 58 of 58
Nowack et al., „Cutaneous findings in systemic sarcoidosis", CC BY-SA 2.0, via Wikimedia Commons · CC BY-SA 2.0 · Source Which diagnosis fits best?
Lupus erythematosus (butterfly rash) Cutaneous sarcoidosis Rosacea Mycosis fungoides
Answer: Cutaneous sarcoidosis · More on Cutaneous sarcoidosis in the knowledge base →
Learning quiz for medical education. Does not replace a clinical examination or an individual diagnosis. Images: Wikimedia Commons, author and licence below each image; resized for the web.
