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Photodynamic therapy (PDT) for acne

Dermatology & Aesthetics estimated about CNY 300-800

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Description

A medical treatment using blue and red light wavelengths to target and reduce Propionibacterium acnes bacteria and sebaceous gland activity in mild-to-moderate inflammatory acne.

Main Uses

Primary clinical use is adjunctive or standalone non-pharmacologic treatment for mild-to-moderate inflammatory acne vulgaris. It targets Propionibacterium acnes (via blue light-induced porphyrin activation) and reduces sebum production/inflammation (via red light-mediated anti-inflammatory and tissue repair effects). Applicable in patients seeking antibiotic-free options, those with topical retinoid intolerance, maintenance therapy post-isotretinoin, and cosmetic dermatology settings.

Normal Range

Red-blue light acne therapy is a non-invasive phototherapy procedure, not a diagnostic laboratory test; therefore, it has no numerical 'normal range' or quantitative biomarkers. Clinical parameters (e.g., wavelength: red light ~630–660 nm, blue light ~405–420 nm; irradiance: 10–120 mW/cm²; treatment duration: 10–30 minutes per session; total sessions: 4–12 over 4–8 weeks) are protocol-specific and determined by device specifications and clinical guidelines—not patient-derived values.

Low Values - Possible Causes

N/A — This is not a quantitative diagnostic test with measurable 'low values'. Suboptimal clinical outcomes may result from insufficient treatment dose (low irradiance/duration), poor patient adherence, severe inflammatory or cystic acne unresponsive to monotherapy, incorrect device calibration, or concurrent use of photosensitizing medications.

High Values - Possible Causes

N/A — This is not a quantitative diagnostic test with measurable 'high values'. Adverse effects (e.g., erythema, dryness, transient hyperpigmentation) may occur with excessive cumulative fluence, overly frequent sessions, inadequate skin cooling, or use on Fitzpatrick skin types V–VI without protocol adjustment.

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estimated about CNY 300-800