hi 
Welcome to Healthcare Magic Forum  
Now as far as your present problem is concerned, you seem to be having Candidiasis of the groin region.. 
First some general precautions: 
Wear cotton clothes and undergarments in order to reduce the sweating 
Do not apply any kind of oils / moisturizing lotion over the affected area 
Now you dont need to apply any cream over the affected region. 
Just give warm saline compresses over the affected area twice a day and then apply clotrimazolecream 
also , you will need to take oral antifungals in the form of 
fluconazole 150 mg once weekly for 2 weeks... 
In case of 
severe itching, take some antihistamine like levocetrizine once a day . 
If inspite of the above measures, the lesions continue to persist or increase , then you might have to see a 
dermatologist for proper assessment and management 
Hope it helps 
Dr Geetika Paul