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At 2025 New Wave Dermatology, Zirwas highlights the most useful dermatology studies from the past 2 years, covering AD misdiagnosis, alopecia, contact dermatitis, and more.
At the 2025 New Wave Dermatology meeting in Aventura, Florida, Matthew Zirwas, MD, a dermatologist at Bexley Dermatology, presented on the most useful dermatology journal entries in the past year.
The studies spanned across dermatologic diseases—hidradenitis suppurativa, burning mouth syndrome, contact dermatitis, atopic dermatitis, psoriasis, hair loss, vitiligo, and melasma. In an on-site interview with HCPLive, Zirwas shared the top 5 most useful dermatology journal entries published in the past 2 years. He highlighted a 2025 retrospective study that explained why 2 out of 3 people with atopic dermatitis are misdiagnosed.1
The study showed the difference between pediatric and adult atopic dermatitis, which explains the ineffectiveness of Hanafin and Rajka criteria for diagnosing adult atopic dermatitis. Genetics causes atopic dermatitis in children, but skin damage causes atopic dermatitis in adults.
However, during his presentation, Zirwas described many other useful journal entries:
Efficacy of Strontium Cream in Alleviating Pruritus in Hidradenitis Suppurativa
This recent open-label study demonstrated Dermeleve’s effectiveness in 75% of people. Although many burned with the application, 85% of participants said they would recommend it to others.
Topical Gabapentin Solution for the Management of Burning Mouth Syndrome: a Retrospective Study
This study explored gabapentin syrup, with patients instructed to swish and spit 3 times a day.
A new study this year found dupilumab does not affect patch test reactions to any allergens, with zero reports of dupilumab actually working in contact dermatitis. However, dupilumab works great for patients with atopic dermatitis.
Other contact dermatitis studies:
Persulphates Allergic Contact Dermatitis from Spa: A New Aetiology of Nummular Contact Dermatitis
North American Contact Dermatitis Group Patch Test Results 2019 - 2020
This study showed an inadequate response to atopic dermatitis biologics like dupilumab. Zirwas said he still applies topical steroids 5 – 20% of the time. The study suggests adding a biologic or JAK inhibitor long-term is not a real option.
Dermatologists should consider short-term cyclosporine or JAK to calm atopic dermatitis and hope dupilumab will maintain improvement. They could also add an oral roflumilast 500 μg per day or methotrexate 5-10 mg per week. If dupilumab still doesn’t work, switching drugs may be necessary.
In 2024, a study found that among 265 patients with a positive patch test for contact dermatitis, 41% had gotten at least 50% better. Only 10.5% improved by at least 90%.
These findings suggest dermatologists should not treat patch tests as diagnostic tools but rather like ANA testing, since it is good for ruling out contact dermatitis when negative.
Oral JAK inhibitors work for about 1 in 5 patients with alopecia universalis or totalis. Dermatologists could consider adding prednisone to JAK: 20 mg/day x 30 days, 10 mg/day x 30 days, 5 mg/day x 30 days. There’s a risk of immunosuppression in the first month, so Zirwas recommends JAK for 6 months and adding prednisone if that regimen doesn’t work.
You can also try clobetasol ointment QHS under a swim cap; after good regrowth, return to a JAK inhibitor. If it still doesn’t work, stop after 6 months.
Other Hair Loss Studies:
Low-Dose Metformin and Profibrotic Signature in Central Centrifugal Cicatricial Alopecia
Effects of Oral Minoxidil on Nails: a Cross-sectional Analysis
Treatments for patients with brittle, slow-growing nails include biotin 1 mg + pyridoxine 100 mg, minoxidil orally (1.25 mg per day) or topically (5% to cuticles nightly), and cynatine HNS oral daily (available on Amazon), which improves hardness, thickness, and appearance.
Research on Vitiligo
Before applying ruxolitinib, consider genetic bimatoprost drops and add NBUVB if possible. Hydroxychloroquine 200 mg once daily was seen to be better than NBUVB in a trial.
See:
Red Light Therapy
Red light therapy should be used for 20 minutes once a week for androgenic alopecia, 12 minutes twice a day for skin aging. The wavelength should be in the 630 nm range.
See:
Reverse Skin Aging Signs by Red Light Photobiomodulation
Red and Green LED Light Therapy: A Comparative Study in Androgenetic Alopecia
Metformin Use
Studies have shown metformin helps acne, hidradenitis, CCCA, and reduces the risk of skin cancer. It is extremely safe and cheap, with no hypoglycemia risk.
See:
Metformin Use and Risk of Non-Melanoma Skin Cancer: A Propensity-Matched Case-Control Study
Other Studies Mentioned During the Session:
Sun Exposure
Psoriasis:
Research on Melasma
References