Laser stands for ‘light amplification by stimulated emission of radiation’.
Dermatologists use lasers for various procedures. Lasers work by emitting high-intensity light with a single wavelength(with one colour )and unidirectional which target a particular tissue in the skin(called as chromophore).
The energy in the waves is absorbed by the chromophore in the skin and then destroys it. In case of Q switch Nd YAG laser ,the laser beam is absorbed by unwanted melanin pigment inside the skin cells and melanocytes in controlled manner which breaks into microfragments and then drained from the skin by lymphatics and thereby reducing it slowly .
Q switch ND-YAG laser is one of the most commonly used lasers.
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However, laser treatment is contraindicated in conditions such as:
To sum up, a laser session usually takes around 10 -15 min.
Moreover, it’s important to know that the effectiveness of the treatment is related to different factors. Such as:
In fact, you will require multiple treatment sessions at an interval of 2-8 weeks, depending on your indication for treatment.
Accordingly, the number of treatment sessions also varies. However, most patients require 4-5 sessions on average.
Consequently, some patients will receive excellent results.
On the other hand, a few patients may receive minimal benefit from laser treatment.
However, most patients will fall between these extremes.
In short, it is important to understand that a range of results is possible. In fact, it is difficult to predict the clinical outcome of the procedure until treatment starts.
You should be aware of the risk of possible complications of laser treatment:
Transient Hypopigmentation: In most patients, the treated area loses pigmentation and becomes lighter in colour. This is temporary and may last up to 4 weeks.
Hyperpigmentation: There is some risk of increased pigmentation as a healing reaction. This is a very rare reaction with QSW Nd: YAG lasers. However, if it occurs, it may last up to 3 to 6 months.
Doctors advise you to use sunscreen and medicated creams before and after the procedure. This can help prevent and reduce it.
Allergic reactions to Q-switched laser treatment are also possible, but very rare. Usually these patients already has some allergy tendency who develop such reactions. In such cases, the procedure is contraindicated.
Your doctor will note and monitor for transient textural changes. However, they usually resolve within 5-7 days. Therefore, they are rarely permanent.
Consequently, longer treatment intervals are recommended if you are prone to textural or pigmentary changes.
In most cases, laser treatment provides positive results. However, at times some tattoo particles are located deep in the skin. Hence they may not be totally removed, even with repeated treatments.
As a result, these tattoos cannot normally be treated with a laser, or many repeated treatments may be needed to remove them.
Similarly, some pigmentary lesions, such as melasma, may also return after treatment.
Lasers work by emitting high-intensity light with a single wavelength(with one colour )and unidirectional which target a particular tissue in the skin(chromophore). These penetrate the uppermost layer of the skin. These light waves are absorbed into the skin. The energy in the waves destroys the desired tissue by heating it. As a result, it encourages new cells to replace the damaged cells. It stimulates new collagen formation; thereby producing new skin that is clear and smooth. Dermatologists use lasers for various procedures. Q switch ND-YAG laser is one of the most commonly used lasers.
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