{"id":864,"date":"2026-07-30T19:38:56","date_gmt":"2026-07-30T11:38:56","guid":{"rendered":"https:\/\/vitiligo.skinmedical.com.hk\/faq004\/"},"modified":"2026-08-13T13:45:28","modified_gmt":"2026-08-13T05:45:28","slug":"faq004","status":"publish","type":"post","link":"https:\/\/vitiligo.skinmedical.com.hk\/en\/faq004\/","title":{"rendered":"Phototherapy Isn't Sunbathing: Unveiling the Mystery of Hospital Light Rooms"},"content":{"rendered":"
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Vitiligo FAQ<\/span><\/h2>\n<\/div><\/div>
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Phototherapy Isn't Sunbathing: Unveiling the Mystery of Hospital Light Rooms<\/span><\/strong><\/h4>\n<\/div><\/div>

\"Doctor prescribed NB-UVB phototherapy for me, can't I just go sunbathing at the beach instead?\" The short answer is: No, and doing so can be quite risky!\uff01<\/strong><\/span><\/span><\/p>\n<\/div><\/div>

Natural sunlight contains broad spectrums of light. Because vitiligo lesions lack protective melanin, prolonged unmonitored sun exposure easily causes sunburn, blistering, or peeling\u2014potentially aggravating the condition.<\/strong> In contrast, clinical medical devices utilize Narrowband UVB (NB-UVB)<\/strong> lamps tuned strictly to a precise 311-nanometer wavelength.<\/span><\/p>

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This acts like a \"precision strike,\" exclusively stimulating dormant melanocytes without wasting energy on harmful wavelengths that damage skin.<\/span><\/p>

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Phototherapy is a marathon requiring consistency<\/strong>\u2014typically 1 -  2 sessions a week lasting just seconds to minutes each. Over months, tiny \"sesame-seed-like\" pigment dots will begin to sprout, signaling real hope!<\/span><\/p><\/div><\/div>

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\"Vitiligo_NB-UVB_treatment\"<\/div><\/div>