No abstract available.
Humans ; Striae Distensae* ; Vitiligo*

No abstract available.
Striae Distensae* ; Tissue Expansion*

BACKGROUND

Striae distensae are common disfiguring atrophic dermal scars. Fractonal lasers have been utilized to improve the appearance of this condition.

To compare the efficacy and safety of picosecond fractional 1064-nm Nd:YAG (PS Nd:YAG) laser versus fractional 10,600-nm Carbon Dioxide (CO2) laser in treating abdominal striae alba (SA).

Thirty-two women with Fitzpatrick skin types III-V and abdominal SA participated in a split-abdomen study, receiving four sessions of fractional PS Nd:YAG and CO2 laser treatments on each side at four-week intervals. Striae texture, atrophy, clinical improvement, and satisfaction were assessed for each side at one and three months, with striae length and width compared pre- and post-treatment. Adverse reactions were noted at each visit.

Abdomen treated with both lasers had significantly improved skin texture, atrophy and clinical improvements (assessed by physicians and patients) at both follow-ups (p < 0.05), with no difference between the two. Striae length and width did not change significantly (p = 0.203 and p = 0.558). Patients reported greater improvement on the CO2-treated side at 1 month, but not at the final follow-up. High satisfaction was noted for both lasers. Adverse reactions noted after both lasers include erythema, edema, crusting/scaling, pruritus, pain and post-inflammatory hyperpigmentation. The PS Nd:YAG laser was associated with greater pain (p < 0.05), but shorter healing time of 10.26 days.

Both fractional PS Nd:YAG and CO2 lasers were effective, well-tolerated and safe treatment options for SA.

Striae Distensae is a very common cosmetic problem. The effectiveness of various lasers, such as the 585-nm pulsed dye laser on the treatment of striae distensae has recently been reported. However, the potential pigmentary alteration of dark skin by pulsed dye laser is known. Thermage is a radiofrequency capable of delivering higher energy fluences to a greater volume of tissue than nonablative lasers, with no epidermal injury. We report three patients who had striae distensae. They were treated with Thermage and 585-nm pulsed dye laser. The treatment was effective and safe for dark skin.
Humans ; Lasers, Dye ; Skin ; Striae Distensae*

Linear focal elastosis is characterized clinically by horizontal yellowish palpable striae on the lower back and histologically fragmentation or aggregation of elastic fibers. We herein report four cases of linear focal elastosis in male patients. They were 12 to 17 years old and the disease duration was 1 to 3 years. We suggest linear focal elastosis is a variant of striae distensae affecting elastic fibers.
Adolescent ; Elastic Tissue ; Humans ; Male ; Striae Distensae

Isotopic response is the occurrence of a new unrelated disease that appears at the same location as a previously already healed disease. In 1995, Wolf et al defined a this new phenomenon and reported eight new cases with fiftyeight cases corresponding to the definition for this phenomenon in literiture. We report two cases considered as isotopic response, urticarial vasculitis and erythema multiforme developed on striae distensae, respectively.
Erythema Multiforme ; Striae Distensae* ; Vasculitis ; Wolves

Linear focal elastosis (LFE) is characterized by several asymptomatic, yellow, palpable, irregularly indurated, striae-like lines extending horizontally across the middle and lower back. A focal increase in elastic fibers is a hallmark of the disease as seen from biopsy specimens. The pathogenesis of LFE is unclear, as is the association between LFE and striae distensae (SD). However, the prevailing opinion is that LFE represents an excessive regenerative process of elastic fibers and is analogous to keloidal repair of SD. Although the timing of onset of LFE and SD was not synchronous in our patient, the triggering factor was the same, which was the growth spurt. This case is supporting the putative association between LFE and SD.
Biopsy ; Elastic Tissue ; Humans ; Keloid ; Striae Distensae

We report herein a case of linear focal elastosis associated with striae distensae. A 17-year-old man presented with striae-like palpable bands on his lower back. Histologic examination revealed many fine wavy and fragmented bundles of elastic fibers in the dermis. He also had typical striae distensae on the knee area. This patient can be one more case to the theory that linear focal elastosis might be the keloidal repair of striae distensae.
Adolescent ; Dermis ; Elastic Tissue ; Humans ; Keloid ; Knee ; Striae Distensae*

Linear focal elastosis (LFE) is a rare dermal elastosis characterized by hypertrophic yellowish linear plaques and increased abnormal elastic tissues in the lumbosacral area. Although the pathogenesis of this disorder remains unknown, it may be associated with keloidal repair process (KRP) of elastic tissues in striae distensae (SD), because there have been some reported cases of LFE accompanied by SD. We herein report a 14-year-old boy with LFE following SD in the lumbar region. Our case supports the hypothesis of KRP in the pathogenesis of LFE. Immunohistochemical study for transforming growth factor-beta (TGF-beta) was negative. Therefore, we assume that the pathogenesis of KRP in LFE is different from that of keloid development, which is the TGF-beta signaling pathway.
Adolescent ; Elastic Tissue ; Humans ; Keloid ; Lumbosacral Region ; Striae Distensae ; Transforming Growth Factor beta

Linear focal elastosis was first described by Burket et al. in 1989 in three elderly men with palpable striae-like yellow bands on their backs. Microscopic examination revealed many fine wavy bundles of elastic fibers separating the collagen in the mid to reticular dermis. The patients' ages range a from 17 to 87 years but this disease seems to be more common in younger age; men are more commonly affected. The cause of this disease has been suggested to be hereditary predisposition, unusual form of striae distensae or keloidal repair of striae distensae. We report linear focal elatosis with typical clinical and pathological features in a 15-year-old boy.
Adolescent ; Aged ; Collagen ; Dermis ; Elastic Tissue ; Humans ; Keloid ; Male ; Striae Distensae