Seborrheic dermatitis is the most common kind of eczema involving areas of the human body rich in concentration with sebaceous glands, which are present in large numbers in skin folds, the scalp, upper chest, and back. According to research evidence, its prevalence stands at around 3-5% in the population globally.[1]
Phototherapy, especially using specific wavelengths to decrease inflammation and thereby control symptoms, has recently been advanced as an option for managing seborrheic dermatitis. This article explores the effectiveness of phototherapy in treating seborrheic dermatitis and details this line of treatment.
What is Seborrheic Dermatitis?
Seborrheic dermatitis is a long-term skin condition characterized by red, scaly, and inflamed patches. The pathology predominantly affects areas of great sebaceous activity: scalp, face, chest, and back. Characterized as red, itching, and flaky skin, it may become embarrassing and uncomfortable.[2] It ranges in its symptoms from mild dandruff to severe thick and crusty plaque formation.
Common Triggers and Risk Factors:
Hormonal changes
Stress
Cold, dry weather
Genetics
Underlying Medical Conditions
What is Phototherapy?
Phototherapy is a treatment through the use of light containing specific wavelengths that have anti-inflammatory effects, thus reducing inflammation and alleviating symptoms of different conditions on the skin.[3] Phototherapy is a non-invasive procedure used to treat diseases such as psoriasis, eczema, and vitiligo for decades.
How It Works:
Phototherapy works by exposing the skin to ultraviolet (UV) light under controlled condition. This light penetrates the skin and affects the cells that contribute to inflammation and scaling. By slowing down the production of these cells, phototherapy helps to reduce symptoms and improve the appearance of the skin.
Types of Phototherapy
UVB Phototherapy: This involves the use of ultraviolet B light, which then will penetrate the upper skin layers.
PUVA Phototherapy: This is a type of therapy that uses UVA light with another medication called psoralen, which is photosensitizing. It makes the skin more responsive to the light.
Narrowband UVB Phototherapy: This is the more concentrated version of UVB phototherapy. It uses a very narrow, specific wavelength (311-313 nm) of light to treat skin conditions most effectively while reducing side effects.[4]
Can Phototherapy Treat Seborrheic Dermatitis?
Phototherapy has proven to be an effective treatment for seborrheic dermatitis, with several researches conducted to back this up. Research highlights its ability to reduce symptoms such as redness and scaling. For instance, one study reveals that symptoms in patients who noted remarkable relief improved significantly with narrowband UVB phototherapy.[5]
Phototherapy exposes the skin to specific wavelengths of UV light. The process helps to:
Reduces Inflammation
Normalize Skin Cell Production
Enhance Skin Barrier Function
What Does the Research Say About Phototherapy for Seborrheic Dermatitis?
Research supports the effectiveness of phototherapy in the treatment of seborrheic dermatitis. A noticeable tendency for the significant reduction of the severity of clinical manifestations of seborrheic dermatitis was observed after several courses of treatment using narrowband UVB phototherapy.[6]
Another clinical trial reported that the patients treated with UVB phototherapy showed significant improvement in symptoms, with minimal side effects and high patient satisfaction.
Can I Treat Seborrheic Dermatitis with Phototherapy at Home?
Yes, you can treat seborrheic dermatitis with phototherapy at home. UV light therapy for eczema at home and red light therapy for seborrheic dermatitis are available and can offer effective treatment options with several advantages. Studies have shown at-home phototherapy to have equal efficacy as in-clinic phototherapy.[7] They offer the convenience of at-home use but require careful handling.
At-home phototherapy offers time and cost-saving advantages in addition to other conveniences. Further studies are indicated to compare its effectiveness in professional settings.
Safety Considerations:
Home devices can pose risks if not used properly, including potential skin damage or increased risk of skin cancer.
Following the manufacturer’s instructions and understanding the potential risks is crucial.
How Long Does it Take for Phototherapy to Work on Seborrheic Dermatitis?
Phototherapy generally begins to show results within a few weeks. Most patients start to notice improvements in their symptoms after 2-4 weeks of treatment. The exact timeline can vary based on the individual and the severity of their seborrheic dermatitis. In some cases, significant relief might be seen after 6-8 treatments.
Factors Influencing Effectiveness and Speed of Treatment:
Severity of Condition
Treatment Frequency
Skin Type and Response
Compliance with Treatment
Conclusion
Phototherapy has proven to be an effective and beneficial treatment for seborrheic dermatitis. It helps reduce symptoms like redness, itching, and scaling while improving overall skin appearance. With consistent use, phototherapy can provide long-term control of seborrheic dermatitis, making it a valuable option for many individuals.
In addition to treating seborrheic dermatitis, light therapy for eczema has also proven beneficial for managing eczema symptoms. At UVTREAT, we offer advanced phototherapy technologies and expert care to ensure the best possible results. Contact us for a consultation and explore how our advanced treatments can make a difference in your skin health.
Myers, Elisha, et al. “An Update on Narrowband Ultraviolet B Therapy for the Treatment of Skin Diseases.” Cureus, 1 Nov. 2021, https://doi.org/10.7759/cureus.19182.
Pirkhammer, D., et al. “Narrow-Band Ultraviolet B (ATL-01) Phototherapy Is an Effective and Safe Treatment Option for Patients with Severe Seborrhoeic Dermatitis.” The British Journal of Dermatology, vol. 143, no. 5, 1 Nov. 2000, pp. 964–968, pubmed.ncbi.nlm.nih.gov/11069503/, https://doi.org/10.1046/j.1365-2133.2000.03828.x.
Koek, M. B G, et al. “Home versus Outpatient Ultraviolet B Phototherapy for Mild to Severe Psoriasis: Pragmatic Multicentre Randomised Controlled Non-Inferiority Trial (PLUTO Study).” BMJ, vol. 338, no. may07 2, 7 May 2009, pp. b1542–b1542, https://doi.org/10.1136/bmj.b1542.
Typically, phototherapy sessions are scheduled 2-3 times a week, depending on the severity of the condition and the response to treatment.
Insurance coverage for phototherapy can vary. Some plans may cover it, while others may not. It's important to check with your insurance provider to understand your benefits.
If you don't see improvement with phototherapy, consult your dermatologist to reassess your treatment plan. They may recommend alternative treatments, such as different phototherapy methods, topical medications, or lifestyle changes.
