Why are different strengths critical? The appropriate strength depends on many factors. For example, babies absorb topical steroids faster than adults, so they may require a low-potency steroid. Areas of the body where skin touches skin (think: armpits, rectal area, etc), as well as sensitive areas (like the skin on the eyelids), tend to absorb topical steroids more rapidly, so those regions of the body also usually require a low-potency steroid. However, thick, rough skin on the palms of the hands and the soles of the feet usually absorb topical steroids more slowly than other parts of the body, so those areas typically require a more potent steroid. Keep in mind: The greater the potency of the steroid (in other words, the lower its class number), the more likely it is to cause side effects .
You may be wondering why I’m encouraging parents to be open to using steroids when I initially did not even apply steroid on Marcie. It was very difficult to get the eczema under control and her eczema will suddenly just flare and affect her whole body. However, a one-time 3 weeks reducing dosage of oral steroid, prednisolone, really helped to keep the eczema manageable . Marcie’s rashes disappeared within the first 2 days of the oral steroid, but gradually came back as the dosage is reduced. I worried a lot after reading the side effects of steroids such as thinning of skin, acne and damage of blood vessels. I am very glad that I chose to trust Marcie’s doctor and persisted with the 3 weeks course despite being fearful everyday. After the 3 weeks course, Marcie’s doctor said he will not give Marcie any treatment that is not 100% safe and will not give her another oral steroid course because that will not be safe. I read later that stopping an oral steroid course halfway causes more harm than following through and makes it more difficult for the doctor to decide on the next step.