■黄褐斑是一种常见的色素沉着症,主要影响面部。这很难治疗,并且是患者非常担心美容问题的原因。所以,我们进行这项研究是为了比较口服氨甲环酸(TXA)与经表皮给药在黄褐斑中的疗效。
■这是一家医院,对40例面部黄褐斑患者进行了为期1年的介入研究。将入选患者随机分为2组,每组20例。A组患者每天两次以250mg的剂量口服TXA片剂,持续12周,B组患者使用dermaroller以2周的间隔将TXA溶液经皮进入黄褐斑病变,持续12周。此后,所有患者均随访黄褐斑面积和严重程度指数(MASI)评分改善,副作用和复发在4周间隔,直到24周。在第4、8、12、18和24周,对所有患者进行了客观(通过MASI)和照相评估。通过评估MASI评分的降低百分比来进行改善的分级。
■大多数患者,在我们的研究中,有24例(60%)的患者出现了黄褐斑的中心面模式,然后是16例(40%)的患者出现的黄斑模式。A组基线MASI评分为11.98(±5.47)分,B组基线MASI评分为12.13(±3.16)分,A组4、8、12、18和24周结束时平均MASI评分为9.75(±4.83)分,6.09(±3.64),4.21(±2.48),2.56(±1.95),和3.10(±3.38),而这些值为9.73(±3.32),6.06(±2.75),4.55(±1.89),2.94(±1.36),B组在24周随访结束时,为3.09(±1.32),A组中有5例(25%)和14例(70%)患者,B组中有11例(55%)和9例(45%)患者的反应良好(改善51%-75%)和非常好(改善>75%)。分别。然而,两组MASI评分的最终降低相似.A组1例患者在24周时复发并不常见,
■主要限制是由于时间限制和随访时间长,样本量小。
■口服和经表皮TXA似乎同样有效,表明TXA的功效可能与其给药途径无关。口服治疗方便患者。TXA的经皮治疗具有局部作用的优势,因此避免了全身副作用,但它有点痛苦,连续的微针训练之间的时间段留给治疗医生的特权,因此缺乏适当的量化。此外,由于黄褐斑容易复发,因此必须安排维护会话。
UNASSIGNED: Melasma is a common disorder of hyperpigmentation mainly affecting the face. It is difficult to treat and is a cause for great cosmetic concern for the patient. So, we did this research to compare the therapeutic efficacy of tranexamic acid (TXA) through oral route versus its transepidermal administration with a
dermaroller in melasma.
UNASSIGNED: This was a hospital-based, interventional study carried over a span of 1 year on 40 patients with facial melasma. The enrolled patients were randomly divided into 2 groups of 20 patients each. Group A patients received oral tablet TXA in a dose of 250 mg twice daily for 12 weeks and Group B patients were given TXA solution transepidermally into the melasma lesions using a
dermaroller at 2 weekly interval for 12 weeks. Thereafter, all patients were followed up for improvement in Melasma Area and Severity Index (MASI) score, adverse effects and relapse at 4 weekly intervals till 24 weeks. All the patients were evaluated for therapeutic outcome both objectively (by MASI) and photographically at 4, 8, 12, 18, and 24 weeks. Grading of improvement was done by assessing percentage reduction in MASI score.
UNASSIGNED: Majority of the patients, 24 (60%) in our study had centrofacial pattern of melasma followed by malar pattern seen in 16 (40%) patients. The baseline MASI score was 11.98 (± 5.47) in Group A and 12.13 (± 3.16) in Group B. The mean MASI score in Group A at the end of 4, 8, 12, 18, and 24 weeks was 9.75 (±4.83), 6.09 (±3.64), 4.21 (±2.48), 2.56 (±1.95), and 3.10 (±3.38) while these values were 9.73 (±3.32), 6.06 (±2.75), 4.55 (±1.89), 2.94 (±1.36), and 3.09 (±1.32) for Group B. At the end of 24 weeks follow-up period, good (51%-75% improvement) and very good (>75% improvement) response occurred in 5 (25%) and 14 (70%) patients in Group A and 11 (55%) and 9 (45%) patients in Group B, respectively. However, the final reduction in MASI score was similar in both the groups. Relapse was uncommon and occurred at 24 weeks in 1 patient from Group A.
UNASSIGNED: The major limitation was small sample size due to time limitation and long follow-up period.
UNASSIGNED: Oral and transepidermal TXA appear equally effective suggesting that the efficacy of TXA is perhaps independent of its route of administration. Oral therapy is convenient for the patient. Transepidermal therapy of TXA has the advantage of local action, hence systemic side effects are avoided, but it is slightly painful and the time period between consecutive microneedling sessions is left to the prerogative of the treating doctor, hence a proper quantification is lacking. Moreover, scheduling of maintenance sessions is necessary as melasma is prone for recurrence.