all pharmacological agents can cause side effects to all of our bodies systems. the side effects that you mention can be caused by just about any drug albeit some in very small percentages of those who ingest them. prednisone, a very potent corticosteroid or anti-inflammatory agent is one of the major drugs used to treat inflammatory bowel disease as well as most other diseases where inflammation or hypersensitivity is a key factor. prednisone is a relatively safe drug when used judiciously and for shorter durations; it is not until it is used long term and in those who have other health problems that it can cause complications. when used short term the dosage begins higher and is then tapered to its completion. i wouldn't worry about the side effects you mentioned as long as you are under the care of a competent physician. if it bothers you it can always be stopped. good luck, mitchell