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     Phototherapy > Daavlin Whole Body Narrow Band UVB Therapy

Daavlin Whole Body Narrow Band UVB Therapy

What is Narrow Band ultraviolet B (NB UVB) therapy?

Narrow Band UVB phototherapy is considered a first-line treatment for many conditions such as psoriasis, vitiligo and eczema, is safe enough for pregnant women and children to use.

Narrowband UVB phototherapy (UVB-NB) uses a UVB narrow band lamp that emits light energy with a wavelength centered at roughly 311 nm. This is less than 1% of total range of wavelengths from sunlight. Studies have shown that:

  • Without medication, only 4% of the sun's rays help to improve skin disease. The balance of the sun's rays merely tan or burn the skin leading to other long-term skin problems.
  • Narrow band UVB uses the optimal part of the UV light spectrum which slows growth of psoriasis lesions or re-pigmentation of one's natural skin coloring.
  • Exposure time of narrowband UVB can be longer than with traditional broadband UVB yielding more effective results. Recent studies have shown 75% clearing (PASI 75) with narrowband UVB.
  • Erythemal response (similar to sunburn) is reduced with narrowband UVB light
  • Risks and side effects of other treatments such as systemic drugs have not been found with narrowband UVB light.
How is NBUVB treatment administered?

The Patient is made to stand in the DAAVLIN Whole Body Chamber where he will be surrounded by light bulbs that deliver special NBUVB light. The patient will be unclothed or partially clothed (depending on the size of the area to be treated) and made to wear wear UVB protective goggles, which will be provided by the attendant. Male genitalia must be shielded unless the area is being treated for psoriasis. Treatment time may last from a few seconds to over 10 minutes and may vary from one treatment to the next.

Which are the diseases where NBUVB therapy can help?

Many disease can be vastly helped by NBUVB therapy. The commonest diseases where NBUVB therapy is very useful are

  1. Vitiligo
  2. Psoriasis
  3. Atopic dermatitis
  4. Parapsoriasis

Other conditions which show good improvement with NBUVB are

  1. Alopecia areata
  2. Pityriasis rosea
  3. Cutaneous T-cell lymphoma (CTCL)
  4. Polymorphous light eruption & other photodermatoses
  5. Lichen planus
  6. Generalised pruritus
  7. Pityriasis lichenoides
Are there any adverse effects with NBUVB Phototherapy?

NBUVB has been used for decades without any major adverse effects. All studies done till date prove that the therapy is safe for use in pregnant women, nursing mothers and children.

However potential adverse effects include:


Redness and burning (and occasionally blistering) of the skin may occur as with any form of sunlight. If this occurs it is usually similar to a mild sunburn reaction.

Premature Skin Ageing

The risk of premature ageing of the skin is also associated with exposure to sunlight. The risk is initially small but increases with prolonged and repeated courses of narrowband phototherapy.

Skin Cancer

There is a theoretical risk of developing skin cancers after prolonged use of UV therapy However these risks are thought to be low. This risk increases after 200 treatments. It is important that should you have had phototherapy treatments elsewhere that you inform the phototherapy staff.

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