KLINIKFUCHS › Spot-diagnosis quiz › Infections & parasitesDermatology spot-diagnosis quiz: Infections & parasites
Fungal, bacterial and viral skin infections, STIs and infestations – 51 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 · 51 cases
Case 1 of 51
CDC/Bruno Coignard, M.D.; Jeff Hageman, M.H.S., „Cutaneous abscess MRSA staphylococcus aureus 7826 lores", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Candidal intertrigo Abscess Cellulitis Ecthyma
Answer: Abscess
Case 2 of 51
unbekannt (Commons-Nutzer), „Skin infection", CC0, via Wikimedia Commons · CC0 · Source Which diagnosis fits best?
Contact dermatitis Cimicosis (bed bug bites) Scabies Scabies
Answer: Cimicosis (bed bug bites)
Case 3 of 51
unbekannt (Commons-Nutzer), „23 Genital Warts", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Secondary syphilis Verrucae vulgares Seborrhoeic keratosis Condylomata acuminata
Answer: Condylomata acuminata
Case 4 of 51
Ran Yuping et al., „Demodicosis", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Rosacea Lupus erythematosus (butterfly rash) Acne vulgaris Demodicosis
Answer: Demodicosis
Case 5 of 51
Poupou l'quourouce, CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Urticaria Erysipelas Erysipeloid Cellulitis
Answer: Erysipelas · More on Erysipelas in the knowledge base →
Case 6 of 51
Ffurler, „Erythema migrans (Wanderröte)", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Nummular eczema Tinea corporis Granuloma annulare Erythema migrans
Answer: Erythema migrans · More on Erythema migrans (Lyme disease) in the knowledge base →
Case 7 of 51
Bobjgalindo, „Onychomycosis", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Erythrasma Tinea pedis Onychomycosis Psoriasis vulgaris (plaque psoriasis)
Answer: Onychomycosis
Case 8 of 51
Klaus D. Peter, Wiehl, CC BY 3.0 DE, via Wikimedia Commons · CC BY 3.0 DE · Source Which diagnosis fits best?
Pityriasis versicolor Tinea corporis Vitiligo Seborrhoeic dermatitis
Answer: Pityriasis versicolor
Case 9 of 51
Whispyhistory, „Scarlet fever rash", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Scarlet fever Erysipelas Kawasaki disease Exanthema subitum (roseola infantum)
Answer: Scarlet fever
Case 10 of 51
Ukster1 (English Wikipedia), „Norwegian Scabies in Homeless AIDS Patient", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Ichthyosis Scabies Mycosis fungoides Crusted scabies (Norwegian scabies)
Answer: Crusted scabies (Norwegian scabies) · More on Scabies in the knowledge base →
Case 11 of 51
Corina G., „Tinea corporis", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Psoriasis vulgaris (plaque psoriasis) Granuloma annulare Lichen planus Tinea corporis
Answer: Tinea corporis
Case 12 of 51
Jonnymccullagh, „Chickenpox 5yearold", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Herpes simplex labialis Varicella (chickenpox) Eczema herpeticum Impetigo
Answer: Varicella (chickenpox) · More on Varicella (chickenpox) in the knowledge base →
Case 13 of 51
Abbassyma (English Wikipedia), „Verruca vulgaris", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Seborrhoeic keratosis Verrucae vulgares Keratoacanthoma Verruca plana
Answer: Verrucae vulgares
Case 14 of 51
Scott (2020), „Presentation of Acrodermatitis Chronica Atrophicans Rashes on Lyme Disease Patients in Canada", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Livedo reticularis Arterial (ischaemic) ulcer ACA (Lyme borreliosis stage III) Livedo racemosa
Answer: ACA (Lyme borreliosis stage III)
Case 15 of 51
James Gathany (CDC), „Erythema migrans - erythematous rash in Lyme disease - PHIL 9875", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Arterial (ischaemic) ulcer Erythema migrans (Lyme borreliosis) Lupus erythematosus (butterfly rash) Livedo reticularis
Answer: Erythema migrans (Lyme borreliosis) · More on Erythema migrans (Lyme disease) in the knowledge base →
Case 16 of 51
Grook Da Oger, „Mycose inguinale“, CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Candidal intertrigo Intertrigo Inverse psoriasis SDRIFE / baboon syndrome
Answer: Candidal intertrigo
Case 17 of 51
Mrradiostar82, „Hand, Foot and Mouth Disease Blisters", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Measles Rubella Hand, foot and mouth disease Scarlet fever
Answer: Hand, foot and mouth disease
Case 18 of 51
HFrankDM (Wikipedia-Benutzername, Klartextname nicht angegeben), „Erysipel bullös", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Herpes zoster Bullous pemphigoid Chronic venous insufficiency (Widmer stage II) Bullous (here bullous haemorrhagic) erysipelas with accompanying cellulitis on the right foot
Answer: Bullous (here bullous haemorrhagic) erysipelas with accompanying cellulitis on the right foot · More on Erysipelas in the knowledge base →
Case 19 of 51
CDC, „Elephantiasis", Public Domain, via Wikimedia Commons · Public Domain · Source Which diagnosis fits best?
Filariasis Scabies Tinea cruris Erythrasma
Answer: Filariasis · More on Filariasis in the knowledge base →
Case 20 of 51
Hayk Margaryan, „Fournier's gangrene 1", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Cellulitis Necrotising fasciitis Fournier gangrene Erysipelas
Answer: Fournier gangrene
Case 21 of 51
Medicalpal, „Carbuncle", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Erysipelas Cellulitis Carbuncle Impetigo
Answer: Carbuncle
Case 22 of 51
CDC/J. Pledger, „Gumma of nose due to a long standing tertiary syphilitic Treponema pallidum infection 5330 lores", Public Domain, via Wikimedia Commons · Public Domain · Source Which diagnosis fits best?
Mycosis fungoides Sporotrichosis Basal cell carcinoma Gumma in tertiary syphilis
Answer: Gumma in tertiary syphilis
Case 23 of 51
Kessalia19, CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Hand eczema Dyshidrotic hand eczema (pompholyx) Secondary syphilis Hand, foot and mouth disease
Answer: Hand, foot and mouth disease
Case 24 of 51
unbekannt (Commons-Nutzer), „Genital herpes female", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Lichen sclerosus Genital herpes Psoriasis vulgaris (plaque psoriasis) Scabies
Answer: Genital herpes · More on Genital herpes in the knowledge base →
Case 25 of 51
unbekannt (Commons-Nutzer), „Cold sore", Public Domain, via Wikimedia Commons · Public Domain · Source Which diagnosis fits best?
Herpes simplex labialis Hand, foot and mouth disease Dyshidrotic hand eczema (pompholyx) Ecthyma
Answer: Herpes simplex labialis
Case 26 of 51
Asvmdrn, CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Herpes zoster Plant contact dermatitis Herpes simplex labialis Eczema herpeticum
Answer: Herpes zoster · More on Herpes zoster in the knowledge base →
Case 27 of 51
Littlekidsdoc, „Bullous impetigo", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Herpes simplex labialis Ecthyma Erythrasma Impetigo
Answer: Impetigo
Case 28 of 51
NiaPol, „Bites of a blood-sucking insect (Tabanidae) 003a", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Papular urticaria Insect bite reaction Cimicosis (bed bug bites) Erythema migrans
Answer: Insect bite reaction
Case 29 of 51
Dr.Gandikota Raghurama Rao, „KERION", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Carbuncle Bacterial folliculitis Sporotrichosis Kerion celsi
Answer: Kerion celsi
Case 30 of 51
Florian Höfer, „Larva migrans cutanea foot", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Cutaneous larva migrans Contact dermatitis Erysipelas Urticaria
Answer: Cutaneous larva migrans · More on Cutaneous larva migrans in the knowledge base →
Case 31 of 51
Abanima, „Cutaneous leishmaniasis2", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Pyogenic granuloma Cutaneous leishmaniasis Myiasis Atypical fibroxanthoma (AFX)
Answer: Cutaneous leishmaniasis · More on Cutaneous leishmaniasis in the knowledge base →
Case 32 of 51
Wesalius, „Lymphedema̠ right leg.jpg", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Lipodermatosclerosis Corona phlebectatica paraplantaris Purpura jaune d’ocre Lymphoedema of the right leg after recurrent erysipelas
Answer: Lymphoedema of the right leg after recurrent erysipelas · More on Erysipelas in the knowledge base →
Case 33 of 51
Mohammad2018, „Pyatrisporum folliculitis", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Papular urticaria Pityriasis versicolor Malassezia folliculitis Candidal intertrigo
Answer: Malassezia folliculitis
Case 34 of 51
Petruss, „Miasis human", CC0, via Wikimedia Commons · CC0 · Source Which diagnosis fits best?
Scabies Myiasis Abscess Carbuncle
Answer: Myiasis
Case 35 of 51
Gilles San Martin, „Human head louse egg", CC BY-SA 2.0, via Wikimedia Commons · CC BY-SA 2.0 · Source Which diagnosis fits best?
Cimicosis (bed bug bites) Scabies Pediculosis capitis Papular urticaria
Answer: Pediculosis capitis · More on Pediculosis capitis in the knowledge base →
Case 36 of 51
Etorofu island, „Erythema infectiosum (右腕)", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Measles Exanthema subitum (roseola infantum) Measles Erythema infectiosum (fifth disease)
Answer: Erythema infectiosum (fifth disease) · More on Erythema infectiosum (fifth disease) in the knowledge base →
Case 37 of 51
Gzzz, „Scabies hand and fingers 1", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Scabies Atopic dermatitis Dyshidrotic hand eczema (pompholyx) Pediculosis capitis
Answer: Scabies · More on Scabies in the knowledge base →
Case 38 of 51
Taofeeq Abdulkareem, „Scabies infection found on an adult thumb hand", CC0, via Wikimedia Commons · CC0 · Source Which diagnosis fits best?
Contact dermatitis Scabies Papular urticaria Impetigo
Answer: Scabies · More on Scabies in the knowledge base →
Case 39 of 51
Klaus D. Peter, Wiehl, Germany, „Facial impetigo (Impetigo02)", CC BY 3.0 de, via Wikimedia Commons · CC BY 3.0 de · Source Which diagnosis fits best?
Candidal intertrigo Tinea corporis Staphylococcal skin infection Seborrhoeic dermatitis
Answer: Staphylococcal skin infection
Case 40 of 51
CDC, „Extragenital syphilitic chancre of the left index finger (PHIL 4147)", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Erythema migrans (Lyme borreliosis) Pyoderma gangrenosum Gumma in tertiary syphilis Secondary syphilis
Answer: Secondary syphilis · More on Secondary syphilis (lues II) in the knowledge base →
Case 41 of 51
Ajay Kumar Chaurasiya, „Ringworm or Tinea cruris of fungal infection", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Atopic dermatitis Candidal intertrigo Tinea cruris Erythrasma
Answer: Tinea cruris
Case 42 of 51
డా. గన్నవరపు నరసింహమూర్తి, „Plantar athlete's foot (moccasin foot), tinea pedis", CC0, via Wikimedia Commons · CC0 · Source Which diagnosis fits best?
Candidal intertrigo Intertrigo Tinea pedis Dyshidrotic hand eczema (pompholyx)
Answer: Tinea pedis
Case 43 of 51
Klaus D. Peter, Wiehl, Germany, „Verruca", CC BY 3.0 de, via Wikimedia Commons · CC BY 3.0 de · Source Which diagnosis fits best?
Verruca vulgaris Epidermoid cyst Verruca plana Verrucae vulgares
Answer: Verruca vulgaris
Case 44 of 51
Iffat Hassan, Taseer Bhat, Hinah Altaf, Farah Sameem, Qazi Masood, „Verruca plana (flat warts) on the chin", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source Which diagnosis fits best?
Verruca plana Seborrhoeic dermatitis Epidermoid cyst Lichen striatus
Answer: Verruca plana
Case 45 of 51
James Heilman, MD, „Folliculitis (hot tub folliculitis)", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source Which diagnosis fits best?
Bacterial folliculitis Hot tub folliculitis (Pseudomonas folliculitis) Acne vulgaris Carbuncle
Answer: Hot tub folliculitis (Pseudomonas folliculitis)
Case 46 of 51
Mattes, „Surgical stiches - knee", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Impetigo Carbuncle Erysipelas Wound infection
Answer: Wound infection
Case 47 of 51
CDC/Dr. Peter Perine (PHIL #3842), „Yaws 01", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Yaws (framboesia) Granuloma annulare Gumma in tertiary syphilis Impetigo
Answer: Yaws (framboesia)
Case 48 of 51
Gzzz, „Borrelial lymphocytoma 1", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source Which diagnosis fits best?
Granuloma annulare Cutaneous pseudolymphoma (borrelial lymphocytoma) Erythema migrans (Lyme borreliosis) Borrelial lymphocytoma
Answer: Borrelial lymphocytoma
Case 49 of 51
CDC/Emory University, Dr. Thomas F. Sellers, „Gonococcal lesion on the skin (PHIL 2038)", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Secondary syphilis Gonorrhoea Palmoplantar psoriasis Reiter syndrome (reactive arthritis)
Answer: Gonorrhoea
Case 50 of 51
US Department of Health and Human Services, „Leprosy thigh demarcated cutaneous lesions", Public Domain, via Wikimedia Commons · Public domain · Source Which diagnosis fits best?
Lepromatous leprosy Erythema nodosum Mycosis fungoides Cutaneous leishmaniasis
Answer: Lepromatous leprosy · More on Lepromatous leprosy in the knowledge base →
Case 51 of 51
Philipp Weigell, „Tunga penetrans (1)", CC BY 3.0, via Wikimedia Commons · CC BY 3.0 · Source Which diagnosis fits best?
Pediculosis capitis Cutaneous larva migrans Scabies Tungiasis
Answer: Tungiasis · More on Tungiasis 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.
