Yes Keep watch on symptoms like nose block , nasal bleeding,  headache,  blurring of vision,  pain around jaw ,teeth , eyes etc

yes it is true keep check on sugar levels maintaine nasal hygiene by using saline nasal spray seek your physician if sugar level not controlled even if he is not diabetic do not take extra sugar in diet

Mucormycosis is an opportunistic infection and depends on multiple factors to occur. It is not a common infection but if there is indiscriminate use of antibiotics, steroids and other immunosuppressive drugs, especially in diabetic patients or those already having a compromised immune system, and they have a poor oral and nasal hygiene, Mucor becomes more likely.

It depends on the dose of steroid it is .. if steroid  dose is not causing sugar raised / or nor lowering the immune system   then there is less chance of getting mucormycosis.  Apart from steroid ,  mucormycosis also depend on other predesposing factor i.e  immunocompromised  state due to many other causes (radiation therapy, hiv hbsag patient etc)

The problem today is that for most physicians, managing Covid19 is virgin territory. When they were told to use steroids, nobody told them how to give steroids. We ENT Surgeons have been giving steroids to our patients for asthma and chronic sinusitis and sinonasal polyposis for a long time and know how to administer these potentially dangerous drugs safely. For Covid19, they must be given high doses in INHALED FORM(Nebulized or using Metred Dose Inhalers more commonly known asthma pumps, or using Dry Powdered Inhalers as capsules using devices like Lupihaler. When given as oral tablets, they have to be given in very high doses (1.5mg to 2mg per kg body weight per day for a short period of 4-5 days and then tapered off in another 3-4 days). This way, the medicines do they job to clear out the inflammation in the lungs and nose

Yes it is true. Corticosteroid causes high blood sugar levels in non diabetics also. This favours growth of fungus.