Thank you for the information. This is either fungal (tinea) or yeast (candidiasis) infection and yes both are caused due to prolonged sweating and occlusion in the skin flexures.

Another cause of frequent or persistent fungal infection is diabetes so I would recommend getting your blood sugar tested when possible.

Here is what I would recommend as of now:

1% Clotrimazole cream: Apply over the rash twice a day for 14 days. If the lesions don't look better in 7 days then mix the Cortizone 10 cream you have with the Clotrimazole in a 1:1 ratio and apply. This will work as a combination even if it hasn’t on its own.

Tab Claritin 10 mg once or twice a day for 14 days depending on the intensity of the itching or burning.

Zeasorb-AF powder dusted over the area twice a day: noon and early evening. Continue for 4 weeks. Thereafter try and keep the affected areas as clean and dry as possible.

The most frequent cause of frequent recurrence of the condition is inadequate treatment. Clinical cure means when the symptoms stop, whereas mycological cure is when the fungus/yeast is eliminated. Clinical cure occurs before mycological cure and most patients stop using the antifungal medication. As the fungus is not eliminated this leads to a recurrence a few weeks later. Therefore it is important to treat for at least 14 days even if the condition looks like it has resolved earlier.

All of the above are available over the counter.

Hope this information is useful, please feel free to ask if you have any queries.

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