Thanks for the query
As you said cause of protein energy malnutrition is intestinal lymphangiectesia. But as I think there must be some inflammatory component this is why she responded to steroid because till now there is not any full proved evidence based study which suggests use of steroid in management of int. lymph. There are so many side effects of steroid particularly when used for long term and in high doses. Hyperglycemia
, cataract, anxiety,depression, colitis, hypertension
, amenorrhoea, and retinopathy are common.
So what she may need is a reevaluation of diagnosis and if there is inflammatory component then it can be used for long term in low dosage under the supervision of physician.
I hope this answers your query well
Wish you and your family good health