Hello and welcome to HCM,
Methlyprednisone is unlikely to cause
heavy periods when used for treatment of a rash.
The occurrence of
heavy vaginal bleeding is merely co-incidental.
Since, you are in pre-menopausal stage, heavy bleeding should be viewed with caution.
Heavy bleeding could be due to
endometrial hyperplasia, fibroids, endometrial growth, hormonal imbalance etc.
I suggest you to consult your gynecologist for clinical assessment and
ultrasound of the pelvis to determine the thickness of the endometrial lining.
If the endometrial lining shows thickening, an
endometrial biopsy or curretting needs to taken to look for evidence of hyperplasia or malignancy.
Thus, consult your gynecologist at the earliest.
Methylprednisone is unlikely to be the cause of these symptoms.
Thanks and take care
Dr Shailja Puri