Can Dexamethasone Lead To Symptoms Of Cushing’s Syndrome?

Question : Hello, I have Exogenous Cushing’s syndrome due to years of taking prednisone for chronic inflammation primarily of the sinuses.....i was feeling so bad that my endocrinologist recently switched me to Dexamethasone instead...I’m on a low dose of .5 daily and am having the usual symptoms of steroid usage such as not sleeping, hungry, red face, etc.. but i feel great...so much energy!! ...my cortisol levels have been around 1.2-2.4 for the last 3 years so I wear an adrenal insufficiency bracelet....so my question is ..I’m assuming that the use of Dexamethasone will continue to perpetuate the Cushing’s syndrome...I will be trying to half a .75 tablet next week to see if that dosage allows me to feel well. I literally thought in December I wouldn’t be here but a couple of years due to extreme fatigue and extreme muscle pain, so I’m loving this Dexamethasone!