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What Is Phototherapy?

Phototherapy is a medical treatment that uses specific wavelengths of light, usually ultraviolet (UV) light, to treat various health conditions. It is most commonly used in dermatology to manage skin disorders such as psoriasis, vitiligo, and eczema.

In this procedure, the affected skin is exposed to controlled light sources like UVB or UVA rays. In some cases, a special medication (photosensitizer) is used along with light exposure to enhance effectiveness. The therapy works by slowing down abnormal skin cell growth, reducing inflammation, and helping restore normal skin color.

Phototherapy is also widely used in newborn babies to treat neonatal jaundice, where light helps break down excess bilirubin in the blood.

It is considered a safe, non-invasive, and effective treatment option, especially for patients who do not respond well to topical medications.

Purpose & Benefits of Phototherapy

Phototherapy offers multiple benefits for both skin conditions and other medical issues.

• Treats skin disorders: Effective for conditions like psoriasis, vitiligo, and eczema.

• Reduces inflammation: Helps calm redness, swelling, and irritation in the skin.

• Slows skin cell growth: Especially useful in psoriasis, where skin cells multiply rapidly.

• Improves skin appearance: Helps restore pigmentation in conditions like vitiligo.

• Treats neonatal jaundice: Helps newborns eliminate excess bilirubin safely.

• Non-invasive treatment: Does not require surgery or major procedures.

Overall, phototherapy is widely preferred because it provides effective results with minimal discomfort.

Who May Benefit from This Procedure?

Phototherapy is recommended for patients with specific conditions.

• Individuals with psoriasis or eczema not responding to creams or medicines.

• Patients with vitiligo (loss of skin pigment).

• People with chronic skin inflammation or itching.

• Newborns with jaundice (high bilirubin levels).

• Patients needing long-term skin condition management.

Doctors assess the severity of the condition and the patient's history before recommending phototherapy.

Phototherapy Procedure

1. Initial Consultation

The doctor evaluates the skin condition, medical history, and suitability for phototherapy.

2. Preparation

The patient may be asked to remove topical products. Protective eyewear is provided to safeguard the eyes.

3. Light Exposure

The affected area is exposed to controlled UV light using a special phototherapy device.

4. Controlled Dosage

The doctor adjusts the intensity and duration based on the patient’s skin type and condition.

5. Completion

The session ends within minutes, and patients may require multiple sessions over weeks.

The procedure is painless, though a mild warm sensation may be felt.

Duration & Therapy Setting

Phototherapy sessions usually last a few seconds to several minutes, depending on the condition and treatment plan.

The treatment is performed in clinics, dermatology centers, or hospitals. Patients typically require multiple sessions per week over several weeks for effective results.

In neonatal care, phototherapy for jaundice may be continuous over several hours or days under medical supervision.

Safety, Precautions & Risks

Phototherapy is generally safe but may have some minor side effects.

Common Effects

• Mild redness or irritation

• Dry skin or slight itching.

Possible Risks

• Sunburn-like reactions

• Skin aging with prolonged exposure

• Increased sensitivity to light

Precautions

• Wear protective eyewear during treatment

• Avoid sun exposure after sessions

• Follow doctor’s instructions on skincare

• Inform doctor about medications causing photosensitivity.

Proper supervision ensures safe and effective treatment outcomes.

Types of Phototherapy

Phototherapy can be classified based on the type of light used:

• UVB Phototherapy: Most commonly used for psoriasis and vitiligo.

• Narrowband UVB: More targeted and effective with fewer side effects.

• UVA Phototherapy (PUVA): Combined with medication for deeper skin penetration.

• Blue Light Therapy: Used for neonatal jaundice.

Each type is selected based on the patient’s condition and treatment goals.

Recovery After Procedure

Phototherapy does not require significant recovery time. Patients can usually resume normal activities immediately after each session.

Some individuals may experience mild redness or dryness, which typically resolves within a few hours. Moisturizers and proper skin care are often recommended.

Since treatment requires multiple sessions, regular follow-ups are important to monitor progress and adjust therapy. In neonatal cases, recovery depends on bilirubin levels and medical supervision.

Dr. Annu Priya

MD-DERMATOLOGIST

DermatologyDermatology

Plot no 324 Above A1 Crockery Rohit Nagar Phase I, Bawadiyan Kalan, Bhopal, Madhya Pradesh, India, 462026

Dr. Subrata Gorai

BHMS

HomeopathyHomeopathy

Krishna Nagar, Nutan Pally, West Tripura, Agartala, Tripura, India, 799001

Dr. Shana Ali Shafique

MD & Founder of CITC, Aesthetic Physician, Hair Transplant Surgeon

DermatologyDermatology

Shop Number-305, Third Floor, Business Guild Complex, Erandwane, Law college Road, Erandwane, Maharashtra, Pune, Maharashtra, India, 411004

Dr. Maragatha Sundari

Family Medicine Internist , General Practitioner

General PhysicianGeneral Physician
Emergency MedicineEmergency Medicine
Family MedicineFamily Medicine

Karuvarakund, Near kizhakkethala Bus stand, Malappuram, Kerala, India, 676523

Dr. Raina Nahar

MBBS, MD - Dermatology , Venereology & Leprosy

DermatologyDermatology

101 Stanford Tower, S.V.Road & Junction, Juhu Road, Yadav Nagar, Mumbai, Maharashtra, India

Dr. Sachith Abraham

MD - Skin & VD, MBBS

DermatologyDermatology

474, 1st Cross, 5th Block, KHB Colony, Bengaluru, Karnataka, India

Dr. Kalpana Sarangi, MD

MD - Dermatology, MBBS

DermatologyDermatology

#101, B Wing, Fortune Terraces, New Link Road, Mumbai, Maharashtra, India

Dr. Vandana Punjabi

MBBS, DVD

DermatologyDermatology

Ground Floor, Krishna Niwas, 3rd Road, Khar West., Mumbai, Maharashtra, India

Dr. Radhakrishna Bhat

MBBS, MD - Dermatology , Venereology & Leprosy

DermatologyDermatology

2nd Floor Outer Ring Road, Teacher's Colony, Bengaluru, Karnataka, India

Dr. Mukesh Ramnane

MBBS, MD - Dermatology , Venereology & Leprosy, DVD

DermatologyDermatology

98, Kodihalli, Bengaluru, Karnataka, India

Frequently Asked Questions

It is used to treat skin conditions like psoriasis, vitiligo, and eczema, and also neonatal jaundice.

No, it is painless, though a mild warm sensation may occur during treatment.

Multiple sessions over weeks are usually needed for effective results.

Yes, it is generally safe when performed under medical supervision.

Yes, there are. Some of them include mild redness, dryness, or irritation may occur temporarily.

Yes, especially newborns with jaundice commonly receive phototherapy.

Sessions usually last a few minutes depending on the condition.

It helps manage symptoms, but some conditions may require ongoing treatment.