Comparison of Ultraviolet A1 and narrowband ultraviolet B phototherapy in prurigos

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

TCTR

Registry ID

TCTR20170531002

Enrollment

Registered

2017-05-31

Start date

2016-03-14

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Patients with prurigo nodularis Prurigo nodularis&#44

Interventions

Ultraviolet A1 (UVA1),Narrow band UVB (NB&#45

UVB)

Experimental Radiation,Experimental Radiation

UVA1,NB&#45

UVB

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.Recalcitrant prurigo nodularis patients for topical or systemic treatment more than 3 months. 2.Stopping topical therapy other than emollients within the previous 2 weeks. 3.Stopping systemic immunomodulating or immunosuppressive therapy within the last 1 month. 4.No history skin cancer.

Exclusion criteria

Exclusion criteria: 1.Pregnancy 2.Patients with manifestations of underlying renal â„ hepatic â„ internal diseases or malignancy 3.History of photosensitivity

Design outcomes

Primary

Measure	Time frame
To evaluate the efficacy of UVA1 compared with NB-UVB phototherapy in patients with PN. 5 months Photographs, EASI score, Number of papules/nodules, Pruritus (visual analogue scale)	—

Secondary

Measure	Time frame
N/A N/A N/A	—

Countries

Thailand

Contacts

Public ContactNarumol Silpa-archa

Department of dermatology, Siriraj Hospital

doctornarumol@gmail.com081-822-3670

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026