Perioral dermatitis is a thing that can happen in pregnancy. It's an itchy red rash around your mouth area and it makes you look like a damn slob. Not everyone gets it, and treatment varies from antibiotics to dermatological medications. In my case, it appeared to have been triggered by spending some time in bright sunshine.
Anyway, I had Betnovate cream, which had been prescribed for dermatitis elsewhere (I actually
do take care of myself, ok, but this was one of those mysterious things that can happen to you pre-pregnancy), and I figured it would help. Here's the thing:
DO NOT PUT BETNOVATE ON YOUR PERIORAL DERMATITIS. (It even says so on the contraindications!)
My itchy, red, unsightly rash became an itchy, red, unsightly
weepy rash.
I have a master's in medical science and I did that.
Some frenzied Googling later, it looked like calendula and vitamin E would help (nothing could make the rash worse than it already was). Mothercare sells a calendula balm (in stick form); yes, it's meant for babies, and Watson's or Guardian sell a generic vitamin E cream.
And hurrah, they worked. The balm stopped the burning itchiness and dissipated the redness, and the cream prevented scarring. However, I still had to endure about 2 weeks of (bright pink) skin regrowth and flaking. Thankfully, that has all faded, and I now use the balm and cream on my other dermatitis, as the Betnovate doesn't seem to work anymore (and you're not supposed to use it for very long anyway), and this combo does.
PS: I am not a doctor. Your mileage may vary.