Hello. Thanks for writing to us at healthcaremagic Chicken pox usually presents as fluid filled lesions and mainly involves the torso, face as well as proximal extremities; there may be associated fever. The rash which you have is unlikely to be chicken pox and probably is a fungal infection; fungal infection is common at sites such as waist, lower abdomen and thighs. The lesions are itchy in fungal infections and they can progressively spread to involve large areas. As the lesions spread they become annular with central clearing and peripheral red raised margins. These are usually scaly. I would suggest that you visit a dermatologist in your region for a confirmatory diagnosis. You try an OTC topical antifungal e.g clotrimazole 1% cream, twice daily for a few days. If indeed this is fungal than Oral antifungal can be added by your dermatologist in addition to the topical antifungal. You may use an OTC topical antihistamine e.g cetrizine 10 mg once daily for symptomatic relief from itching. Regards