Please select the eligibility criteria that correspond to the clinical trial below.
Title: Treatment of Atopic Dermatitis by a Full-Body Blue Light Device
Brief Summary: Multicentric, placebo-controlled, double-blinded, three-armed, prospective, randomized controlled trial.150 patients diagnosed with atopic dermatitis will be randomized to arm 1 (irradiation for 30min at 415nm wavelength), arm 2 (irradiation for 30min at 450nm wavelength), and arm 3 (irradiation for 30min at low-dose (placebo)). Irradiation will be scheduled 3 times a week for 8 weeks. Patients will be followed up for four weeks after the last irradiation.


Options:
A: Inclusion Criteria:

* Patients with chronic AD (Hanifin and Rajka, 1980); moderate to severe disease with SCORAD-index \> 30 (maximum = 102).
* Age \> 18 years
* No topical steroids (except 1% hydrocortisone) or topical/systemic antibiotics or antihistamines within the last 2 weeks, no systemic glucocorticosteroids or other immunosuppressive agents within the last 8 weeks, no phototherapy within the last 12 weeks before inclusion

Exclusion Criteria:

* Pregnancy or lactation
* Skin cancer or dysplastic naevi, photosensitive skin diseases, autoimmune diseases or relevant cardiovascular diseases
* Photo-skin type I according to Fitzpatrick
B: Inclusion Criteria:

* Signed and dated informed consent prior to any study mandated procedure
* Good health as determined by the Investigator
* Willing and able to comply with study requirements
* Atopic dermatitis (AD) fulfilling the United Kingdom (UK) criteria of AD
* Age between 18 and ≤ 75 years
* Reliable method of contraception for women of childbearing potential (i.e. low failure rate less than 1% per year; e.g. oral contraceptives, intrauterine device \[IUD\] or transdermal contraceptive patch)
* Willing to abstain from excessive sun / UV exposure (e.g. sunbathe, solarium) during the course of the study
* Body Mass Index ≥ 18 and ≤ 35

Exclusion Criteria:

General

* Inmates of psychiatric wards, prisons, or other state institutions
* Investigator or any other team member involved directly or indirectly in the conduct of the clinical study
* Participation in another clinical trial within the last 30 days
* Pregnant or nursing women
* Risk of non-compliance with study procedures

Medical History

* Past or present disease, which as judged by the investigator, may affect the outcome of this study. These diseases may include cardiovascular disease, malignancy, hepatic disease, renal disease, hematological disease, neurological disease, endocrine disease or pulmonary disease, and others.
* Clinically relevant abnormalities in hematology, or blood chemistry at screening.
* Positive HIV-1/2Ab, hepatitis B surface antigen (HBsAg) or hepatitis C virus antibodies (HCV-Ab) test at screening.
* Diastolic blood pressure above 95 mmHg.
* Febrile illness within 2 weeks prior to baseline visit.
* Alcohol or drug abuse within 12 months prior to screening (i.e., Regular daily consumption of more than 1 liter of beer or the equivalent quantity of approximately 40 g of alcohol in another form.)
* Photodermatosis and/or significant photosensitivity, including porphyria and/or hypersensitivity to porphyrins as well as photosensitivity due to present or past (within the last year) intake of amiodarone.
* Congenital or acquired immunodeficiency
* Patients who have been diagnosed with invasive skin cancer at any time (=malignant cells invaded below the basal membrane of the epidermis), or with severe actinic damage present at baseline visit.
* Patients with genetic deficiencies attached with increased sensitivity to light or increased risk to dermatologic cancer (i.e. Xeroderma pigmentosum, Cockayne Syndrome, Bloom-Syndrome).

Concomitant medication/treatment in medical history and during the study

Within 8 weeks prior to baseline visit:

* Systemic immunosuppression treatment (steroids, cyclosporine, azathioprine, Mycophenolate Mofetil (MMF))

Within 4 weeks prior to baseline visit:

* UV radiation treatment

Within 2 weeks prior to baseline visit:

* Topical steroid treatment
* Topical calcineurin inhibitor treatment

Within 3 days prior to baseline visit:

* Photo-sensitising medication (e.g. psoralen, tetracyclines, hydrochlorothiazide, phenothiazines, quinolones, hypericumperforatum, arnica, valerian, tar) as assessed by the regular medication plan of the patient
* colours (e.g. thiazide, toluidine blue, eosin, methylene blue, rose Bengal, acridine) which will be visible on the patient's skin
C: Inclusion Criteria:

* Participant (i.e. the neonate) must have a parent or sibling with a history of doctor-diagnosed atopy (i.e. at least one of: eczema, asthma, hayfever)
* Mother aged ≥18 years of age at enrolment
* Baby \<36 weeks gestation at screening
* Informed consent from the mother on behalf of the participant
* Mother has the ability to understand English
* Live in a hard water area (\>250 mg/L Calcium Carbonate)
* Consent of landlord for installation on water softener (if appropriate)
* Occupy a property appropriate for installation of a water softener

Exclusion Criteria:

* Preterm birth (defined as birth prior to 37 weeks gestation)
* Significant inflammatory skin disease at birth not including seborrheic dermatitis ("cradle cap")
* Sibling (including twin) previously randomised to this trial. If multiple birth, the first child will be randomised into the trial.
* The child is to be fostered/adopted
* Any immunodeficiency disorder or severe genetic skin disorder
* Child has any other serious health issue which, at parent or investigator discretion, would make it difficult for the family to take part in the trial.
* Planned stays away from home for a continuous period of more than 2 weeks or a total of 1 month out of the 6 month follow up period
* Water softening or filtration device already installed
* Concurrent enrolment in any other skin-related intervention study
* Other medical condition that in the opinion of the CI could interfere with the conduct of the trial
D: Inclusion Criteria:

* All paediatric and adult patients registered with an Royal College of General Practitioners (RCGP) Research and Surveillance Centre (RSC) contributing GP practice during the study period (2008-2018) and with at least one year of follow-up.

Exclusion Criteria:

* The presence of psoriasis, photodermatitis, or ichthyosis

Answer: B