回复：还有，我正在吃 Decardron steroid 药的 (4mg, 3 times per day)

12 mg decadron per day - that is very very high does of steroid, too high

you need to use high dose 'colon pure' type fiber - purified psyllum husk fiber, otherwise your intestine and colon are going to explode with that high dose of steroid. 

also, are you getting any sleep at all?  Take care.