There is no evidence of safe and effective use of topical corticosteroids in pregnant mothers. Therefore, they should be used only if clearly needed. Long term use and large applications of topical corticosteroids may cause birth defects in the unborn. It is not known whether topical corticosteroids enter breast milk. Therefore, caution must be exercised before using it in nursing mothers. Topical corticosteroids should not be applied to the breasts of nursing mothers unless the mothers instructed to do so by the physician.
processing.... Drugs & Diseases > Protocols Corticosteroid Dose Equivalents Updated: Mar 29, 2016
If too much corticosteroid cream becomes absorbed through the skin, serious complications can result, including adrenal gland suppression and Cushing's syndrome. In adrenal gland suppression, the body stops manufacturing its own steroids, so the patient may become dependent on the drug. Cushing's syndrome causes symptoms including diabetes, high blood pressure, and muscle weakness. Local side effects are also possible due to misuse of corticosteroid cream. These can include skin atrophy, stretch marks , susceptibility to infection, allergy , easily bruised or injured skin, and enlarged blood vessels.