Dose and administration: Apply hydrocortisone cream to the affected area as a thin film 2 to 4 times daily depending on the severity of the condition. It is not likely other drugs you take orally or inject will have an effect on topically applied hydrocortisone. But many drugs can interact with each other. Tell your doctor all prescription and over-the-counter medications and supplements you use. During pregnancy, hydrocortisone should be used only when prescribed. Infants born to mothers who have been using this medication for an extended period of time may have hormone problems. Tell your doctor if you notice symptoms such as persistent nausea/vomiting, severe diarrhea, or weakness in your newborn. This medication passes into breast milk. However, this drug is unlikely to harm a nursing infant. Consult your doctor before breast-feeding.
The secretion of cortisol is mainly controlled by three inter-communicating regions of the body, the hypothalamus in the brain, the pituitary gland and the adrenal gland . This is called the hypothalamic–pituitary–adrenal axis. When cortisol levels in the blood are low, a group of cells in a region of the brain called the hypothalamus releases corticotrophin-releasing hormone , which causes the pituitary gland to secrete another hormone, adrenocorticotropic hormone , into the bloodstream. High levels of adrenocorticotropic hormone are detected in the adrenal glands and stimulate the secretion of cortisol, causing blood levels of cortisol to rise. As the cortisol levels rise, they start to block the release of corticotrophin-releasing hormone from the hypothalamus and adrenocorticotropic hormone from the pituitary. As a result the adrenocorticotropic hormone levels start to drop, which then leads to a drop in cortisol levels. This is called a negative feedback loop.