Hello...  As said it is a critical disease.  But by the description u have given,  that it's all over ur face,  chest etc,  then definitely u have to consult the nearest factor at the earliest and get a confirmed diagnosis first and start on the medications..

Thanks for the query. Fungal infection is becoming an increasing problem due to rampant usage of antifungals. Please see a dermatologist as some extra medications are coprescribed many a times to treat. If needed a simple skin test can also be done. Till then use only OTC anti-allergic medications to control itching. Personal hygiene should be good. Wear loose fitting clothes.