Dermatology spot-diagnosis quiz: Hair, nails & mucosa
Alopecias, nail changes and findings of the mouth and mucosa – 15 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 · 15 cases
Case 1 of 15
Abbassyma at English Wikipedia, „Allopecia areata", Public Domain, via Wikimedia Commons · Public domain · Source
Glen, „Acute paronychia with pus-filled abscess on finger, photographed by Glen Humble - 3 September 2011", CC BY 2.0, via Wikimedia Commons · CC BY 2.0 · Source
Which diagnosis fits best?
Answer: Paronychia
Case 3 of 15
Bobjgalindo, „Clubbed fingers.JPG", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source
Which diagnosis fits best?
Answer: Clubbing with watch-glass nails (grade III–IV)
Case 4 of 15
Before My Ken, „Back of man's head", CC BY-SA 3.0, via Wikimedia Commons · CC BY-SA 3.0 · Source
Faria, Silva, Mafra et al. (2022), „Actinic cheilitis in rural workers: prevalence and associated factors", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source
Which diagnosis fits best?
Answer: Actinic cheilitis
Case 6 of 15
Unnikrishnan, Vudayana, Diddi et al. (2026), „Chemotherapy and the Skin: Understanding Dermatologic Side Effects", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source
Which diagnosis fits best?
Answer: Anagen effluvium
Case 7 of 15
DermNetNZ, „Aphthous stomatitisNZ", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source
Which diagnosis fits best?
Answer: Minor aphthous ulcers
Case 8 of 15
Williams, Campbell, Thakker et al. (2025), „Adjuvant use of topical metformin with standard therapies in recalcitrant central centrifugal cicatricial alopecia: A case series", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source
Which diagnosis fits best?
Answer: Central centrifugal cicatricial alopecia (CCCA)
Case 9 of 15
Superdisk, „Fordyce Spots on Lips", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source
Which diagnosis fits best?
Answer: Fordyce spots
Case 10 of 15
Seungjun Lee & Seokchan Eun, „Longitudinal melanonychia", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source
Which diagnosis fits best?
Answer: Longitudinal melanonychia with washboard nails
Case 11 of 15
Laila (Commons-Benutzerin Lmossabasha064), „Fissured Tongue", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source
Which diagnosis fits best?
Answer: Lingua plicata (fissured tongue)
Case 12 of 15
Wjh31, „Runners toe", Public Domain, via Wikimedia Commons · Public domain · Source
Which diagnosis fits best?
Answer: Post-traumatic onychodystrophy
Case 13 of 15
Dimitrios Malamos, „Lichen planus in finger nails", CC BY 4.0, via Wikimedia Commons · CC BY 4.0 · Source
Which diagnosis fits best?
Answer: Onychorrhexis
Case 14 of 15
יעקב הזמר, „Beard hair loss due to trichotillomania", CC BY-SA 4.0, via Wikimedia Commons · CC BY-SA 4.0 · Source
Which diagnosis fits best?
Answer: Trichotillomania
Case 15 of 15
Ekem, „Chloronychia (green nail syndrome)", CC0, via Wikimedia Commons · CC0 · Source
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.
