The answer to the "tender ear lesion" is #4 Candida.
Congrats to the brilliant diagnosticians who got it. This was very hard because the ear is not a common site for a yeast infection and only 7% of the doctors taking the quiz online got it right. The most common answer from physicians was squamous cell carcinoma.
A few give-aways:
1. Impetigo (caused by staph or strep) usually responds quickly to antibiotics
2. The lesion appeared suddenly and cancer and other growths are usually slow growing
3. A candida infection can mimic the bacterial disease.
Candida albicans is a common fungal infection that causes diaper rash, thrush (mouth) and "yeast" infections. It usually needs a moist environment to grow and the normal skin bacteria usually acts as a barrier from letting Candida take hold. Antibiotics that get rid of the normal flora allow Candida to take hold (as it did in this case).
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