How common is paradoxical hair growth?
Paradoxical hypertrichosis (PH) is said to have a low incidence from LHR, ranging from 0.6% to 10% of those treated; however, risk increases among those with underlying androgen-related hormonal conditions.
What are the treatment options for improving Paradoxical Hypertrichosis? If you start to experience or have experienced paradoxical hypertrichosis all is not lost. It may seem counterintuitive but experts often recommend sticking to your course of laser treatments because the technology can eventually remedy it.
An uncommon but striking adverse effect is an increase in hair density, color, or coarseness, or a combination of these at treated sites in the absence of any other known cause of hypertrichosis. This event has been called paradoxical hypertrichosis, terminalization, induction, and terminal hair growth.
Paradoxical Hair Regrowth
The main factors encouraging this paradoxical re-growth are hormonal disorders associated with polycystic ovary syndrome, and the taking of certain medications such as corticosteroids and Finasteride®. The areas prone to the risk in women are the neck, cheeks , and arms.
The primary cause of instances of 'true' paradoxical hair growth is probably limited to darker phototypes with one or more other characteristics including polycystic ovarian syndrome or other androgen hormonal irregularities following high energy treatments with the corresponding inflammatory sequelae.
Treatment for paradoxical hypertrichosis is laser therapy of the affected area. Conclusions: Paradoxical hypertrichosis is a rare side effect of laser hair removal; the pathogenesis of this event remains widely unknown. We recommend further large-scale studies to investigate this effect.
Probability of Impact. Paradoxical hypertrichosis (PH) is said to have a low incidence from LHR, ranging from 0.6% to 10% of those treated; however, risk increases among those with underlying androgen-related hormonal conditions.
The paradoxical effect has been documented most commonly after the use of induced pulse light and alexandrite lasers. One possible explanation is the activation of dormant hair follicles by suboptimal fluences. Another mechanism may be the synchronization of hair growth cycles by direct light stimulation.
Paradoxical hypertrichosis is especially common on the neck and face. It has also been linked to affect persons with darker skin types (III-VI); with dark, thick hair; and with underlying hormonal conditions. Electrolysis doesn't in anyway cause this problem.
Why does my chin hair get worse after laser?
Patients may notice more hair 1 – 3 weeks after laser hair removal sessions as follicles in the growing cycle begin to shed. During this process, exfoliating the skin, once swelling and redness have dissipated, can help hairs shed faster, leaving skin feeling smoother.
This means that some hairs may not be affected by the laser during the initial treatment, and may continue to grow as normal. Additionally, new hair follicles may become active after the initial treatment, leading to the appearance of new hair growth.
The other more commonly seen complications were epidermal burning with blisters, erosion, and crust formation followed by post-inflammatory hypo- and/or hyperpigmentation. Conclusion: Paradoxical hypertrichosis and terminal hair change is a common complication of IPL photoepilation.
Among the causes of acquired generalized hypertrichosis is the use of certain drugs, and the most frequently involved agents are phenytoin, cyclosporin, and minoxidil.
streptomycin - increased hair growth in children (of both sexes) has been reported. diphenylhydantoin - hypertrichosis seen more in females. corticosteroids - facial hypertrichosis may result from prolonged or intensive therapy. penicillamine - associated with hypertrichosis affecting the trunk and limbs.
Pathophysiology of Hirsutism and Hypertrichosis
Androgens promote thick, dark hair growth. Testosterone stimulates hair growth in the pubic area and underarms. Dihydrotestosterone stimulates beard hair growth and scalp hair loss.
Paradoxical hypertrichosis is a rare side effect of laser hair removal and intense pulsed light hair removal therapy. It causes an increase in denser, coarser, or darker hair, essentially the opposite effect of what you wanted when you decided on laser hair removal.
Paradoxical hypertrichosis is the growth of fine, dark hair in treated areas or untreated areas close to the area treated on the face and neck, more frequently affecting those with darker skin (Fitzpatrick III-VI) and darker hair color, and most associated with those having undergone the intense pulsed laser and long- ...
Rarely, laser hair removal can cause blistering, crusting, scarring or other changes in skin texture. Other rare side effects include graying of treated hair or excessive hair growth around treated areas, particularly on darker skin.
While some hairs may be in the anagen phase, others may be in the resting or transition phases. The laser is most effective on hairs in the anagen phase, meaning hairs in other stages will not be as affected and will continue to grow.
Why is my hair growing back darker after laser?
In rare instances, laser hair removal may cause thicker, darker hair to grow or regrow in an adjacent area to the one being treated. This condition is known as paradoxical hypertrichosis. Paradoxical hypertrichosis can occur anywhere on the face or body.
By scheduling regular follow-up treatments, you can ensure that any new hair growth after laser removal is treated early and that the initial treatment results are maintained over time. Also, follow your dermatologist's instructions to maintain the results.
However, even though laser treatments damage hair follicles, they're not destroyed completely. Over time, the treated follicles may recover from the initial damage and grow hair again. It's a tall order to eliminate every hair follicle in a given area. Therefore, you may notice a tiny amount of hair regrowth.
When the laser targets the hair follicle, it damages the root of the hair. This damage signals to the body that the hair is no longer needed and will eventually be shed. In most cases, this occurs 1 to 3 weeks after your LHR treatment, and it sometimes looks like blackheads or stubble.
If you treat the area in every 2 weeks, you are simply treating too soon and essentially just shooting heat against the skin, but not destroying anything. So you should definitely not to laser in every 2 weeks. Not mention undergoing laser too frequently can lead to skin irritation, burns, or other complications.