Whitelisbon
From the article I linked above:
“HPA axis suppression can occur following use of any exogenous steroid. Physiological adrenal suppression has been defined as a ‘cortisol level below the normal range but with the capacity for prompt recovery’ while pathological adrenal suppression is described as ‘a state of adrenal insufficiency, adrenal crisis or persistent laboratory evidence of adrenal suppression without prompt recovery’.35 Following exposure to exogenous corticosteroid, the body adjusts the HPA axis through the physiolo- gical suppression of endogenous cortisol. Following weeks to months of persistent exogenous corticosteroid exposure, the adrenal glands may become atrophic and are temporarily unable to produce adequate glucocorticoids to meet the body’s requirements. In this situation, the adrenal suppression becomes pathological and an adrenal crisis may occur.
Following TCS use, temporary physio- logical adrenal suppression may be apparent within 2–4 weeks but is quickly reversible and the patient recovers fully.35–38 We are unaware of any reports of patho- logical adrenal suppression during the use of TCS that is discontinued on resolution of the active eczema.
In a review of 16 TCS trials that recorded HPA suppression, only one reported pathological adrenal suppression: five adult psoriasis patients who used more than 100 g clobetasol propionate a week for between 10 weeks to 18 months developed features of Cushing’s syndrome. On withdrawal they suffered symptoms of adrenocortical insufficiency; and in addition they developed pustular psoriasis.35
There are 25 case reports in the literature of HPA axis suppression. These children mostly used super-potent topical steroids (clobetasol proprionate) for 1-17 months for diaper eczema.39-47
There have been two reports of death due to sepsis in association with marked overuse of TCS in very young infants.48,49
It is clear that physiological HPA axis suppression can occur for the duration of treatment with potent TCS. When used for routine eczema management in children, pathological HPA suppression has not been reported.
Summary
Physiological HPA axis suppression can occur with widespread and prolonged, or occlusive use, of potent/superpotent TCS. Clinically significant or pathological adre- nal suppression is very rare in the treatment of paediatric eczema with topical agents.”
What has happened to your son is a recognised problem, but incredibly rare, so much so that his skin specialist should write him up as a case. HPA from asthma treatment is much more common however, and highly likely to be the biggest contributor. But it doesn’t change the fact that steroids are safe and effective treatment for eczema for the majority of people.
These single anecdotes of rare exemptions to the usual - a child reacting to ointments, a child with HPA suppression - do not mean that ointments aren’t better and steroids are bad. It means that people with exceptional experiences of eczema in their children are posting about it on MN. I have no problem with that, but these are rare, exceptional experiences which should be remain in that context and do not outweigh evidence based consensus of overall treatment.