I have atopic dermatitis. Can it start later in life at 34?

Question

Hello doctor,

I am 34 and developed itchy, scaly patches on my skin after relocating to a colder city for work last year. I never had eczema as a child, but now I am told it is adult-onset atopic dermatitis. So, my concerns are:

Is it common for this condition to start so late in life?
My recent labs showed vitamin D at 14 ng/mL. Can low vitamin D worsen eczema symptoms or flares?
Should supplementation help?
Also, how often should moisturiser be applied daily for the best control?
I notice flares during poor sleep weeks. Are sleep and stress connected to this condition?

Kindly suggest.

Answer 1

Hello,

Welcome to icliniq.com.

Thank you so much for sharing your concern with me. I understand how confusing it can feel to develop eczema as an adult, especially when you never had it as a child.

Yes, adult-onset atopic dermatitis is increasingly recognized and is among the very common diseases we see in dermatology these days.

While many people develop eczema in childhood, some first experience symptoms in their 20s, 30s, or even later. Moving to a colder, drier climate can significantly affect the skin barrier.

Cold air and low humidity pull moisture from the skin, leading to dryness, irritation, and inflammation, especially if your skin is genetically prone to sensitivity.

Your vitamin D levels are low, and there is evidence that low vitamin D is associated with more severe eczema in some individuals.

Vitamin D plays a role in immune regulation and skin barrier function, so deficiency may worsen inflammation and increase susceptibility to flares. Correcting your vitamin D levels will help improve overall skin health, though it is usually part of a broader treatment plan rather than a standalone cure.

Regarding moisturizers, they are the foundation of eczema control. Ideally, moisturizer should be applied at least two to three times daily, and always within three minutes after bathing to lock in moisture.

Use a ceramic paste perfume-free moisturiser containing Glycerin, Cetearyl Alcohol, and Ceteareth-20 or white petroleum jelly. In colder climates, thicker creams or ointments (rather than light lotions) provide better protection. If your skin feels dry, it usually means it needs more frequent application.

Use a white soap or any moisturising soap and avoid any kind of antibacterial soap as they tend to be harsh on the skin, damaging the skin barrier and the eczema or topical dermatitis.

Sleep and stress are strongly connected to eczema. Poor sleep can increase inflammatory chemicals in the body, and stress activates immune pathways that can worsen itching and redness.

Many patients notice flares during periods of high stress or inadequate sleep, so improving sleep hygiene and incorporating stress reduction techniques like exercise, breathing exercises, or relaxation routines can make a real difference.

I hope it helps with your query.

For more queries, feel free to reach out to me anytime.

Thank you.