vitamin C deficiency

维生素 C 缺乏
  • 文章类型: Case Reports
    镰刀,以维生素C缺乏为特征,通常表现为各种症状,最常见的皮肤损伤。然而,孤立性皮肤病变的表现被认为是不典型的。有大量饮酒史的老年患者,表现为小的皮肤病变,迅速发展为孤立的开放性伤口,没有任何先前的创伤。实验室分析显示严重的维生素C缺乏(<5μmol/L)。高剂量维生素C替代疗法后,患者表现出明显的改善。此病例强调了镰刀可能会出现孤立的下体伤口,没有典型症状。它强调了迅速考虑维生素C替代疗法的重要性,特别是在酗酒者等高危人群中,医疗保健提供者。
    Scurvy, characterized by vitamin C deficiency, typically manifests with various symptoms, most commonly skin lesions. However, the presentation of a solitary skin lesion is considered atypical. An elderly patient with a history of heavy alcohol consumption presented with a small skin lesion that developed rapidly into a solitary open wound without any preceding trauma. Laboratory analysis revealed severe vitamin C deficiency (<5 μmol/L). The patient showed significant improvement following high-dose vitamin C replacement therapy. This case underscores the potential for scurvy to present with a solitary lower body wound devoid of typical symptoms. It highlights the importance of prompt consideration of vitamin C replacement therapy, particularly in high-risk groups such as alcoholics, by healthcare providers.
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  • 文章类型: Case Reports
    维生素C缺乏,也被称为镰刀病,导致结缔组织异常和各种症状。我们描述了一个壳出血的病人,非常罕见的镰刀病。一名39岁的男子左臂和左腿虚弱。最初诊断为右侧肠管出血,他接受了脑出血的疏散。反复体格检查显示有出血倾向和多次未经治疗的龋齿时,怀疑患有此病,缺失的牙齿,和牙龈炎.该患者的吸烟史进一步支持了对风湿病的诊断,酒精使用障碍,不良饮食,和低血浆维生素C浓度。在接受包括维生素C在内的口服营养补充剂后,出血倾向迅速改善。该病例强调了在对有出血倾向的患者进行鉴别诊断时,包括镰刀的重要性。尤其是那些饮食不良或饮食史不详的人。经验性服用维生素C是一种合理的治疗方法。
    Vitamin C deficiency, also known as scurvy, causes abnormalities in connective tissues and varied symptoms. We describe a patient with putaminal hemorrhage, a very rare presentation of scurvy. A 39-year-old man presented with weakness in the left arm and left leg. Right putaminal hemorrhage was initially diagnosed, and he underwent evacuation of the intracerebral hemorrhage. Scurvy was suspected when repeated physical examinations revealed a bleeding tendency and multiple untreated dental caries, missing teeth, and gingivitis. A diagnosis of scurvy was further supported by the patient\'s history of smoking, alcohol use disorder, poor diet, and low plasma vitamin C concentration. After receiving oral nutritional supplementation including vitamin C, the bleeding tendency quickly improved. This case highlights the importance of including scurvy in a differential diagnosis for patients with bleeding tendencies, especially those with a poor diet or unknown dietary history. Empirical administration of vitamin C is a reasonable treatment.
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  • 文章类型: Case Reports
    镰刀是一种由缺乏维生素C引起的疾病。它是一种营养缺乏,与多种严重疾病有关。尽管由于食品和营养补充剂的进步,发达国家现在很少报告这些病例,它们在发展中国家仍然很普遍,虽然罕见,因为营养不良。由于镰刀病的患病率较低,在大多数情况下,诊断延迟,有时完全错过,这会导致严重的并发症和不必要的手术。这里,我们介绍了一例罕见的4岁女性儿童患有严重急性营养不良(SAM),并伴有镰刀症.最初的临床体征显示SAM。对左股骨和膝关节进行X线和MRI检查,以进一步评估骨科参数。临床表现和X线影像学检查证实了镰刀病的所有体征。患者开始使用配方食品75(F-75)饮食,以解决严重的营养不良,并观察到稳定的体重增加。
    Scurvy is a disease caused by a lack of vitamin C. It is a nutritional deficiency that is associated with multiple severe conditions. Although developed countries report these cases rarely now due to advancements in food and nutritional supplements, they are still prevalent in developing countries, albeit rare, because of poor nutritional status. Due to the lower prevalence of scurvy, diagnosis is delayed in the majority of cases and sometimes missed completely, which results in serious complications and unnecessary workups. Here, we present a rare case of a four-year-old female child with severe acute malnutrition (SAM) presenting with scurvy. The initial clinical signs showed SAM. X-ray and MRI of the left femur and knee were done to further evaluate the orthopedic parameters. Clinical presentation and radiographic imaging confirmed all the signs of scurvy. The patient was started on the Formula 75 (F-75) diet to address the severe malnutrition, and steady weight gain was observed.
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  • 文章类型: Case Reports
    背景:在发达国家,镰刀症是一种由维生素C缺乏引起的罕见疾病。我们介绍了一例14岁男性自闭症的镰刀病病例,具有新的表现和影像学表现。该病例出现了新的下肢深静脉血栓形成(DVT),继发于双侧髂翼骨膜下血肿压迫外静脉。骨膜下血肿是已知的镰刀病特征,但以前尚未描述过引起DVT的大型和双侧骨盆骨膜下血肿。
    方法:一名14岁白人男性,患有自闭症和严重的饮食限制,表现为下肢肿胀和不活动。他被诊断为下肢DVT。进一步调查显示缺铁性贫血,MRI发现双侧骨膜下髂骨大血肿导致髂血管受压。他在接受维生素C替代治疗后有所改善,随访影像学显示DVT和血肿的分辨率。
    结论:DVT在儿童中很少见,诊断时应及时调查其根本原因。此病例显示了DVT的异常原因,并且是儿科镰刀病的异常表现。
    BACKGROUND: Scurvy is an uncommon disease in developed countries caused by deficiency of vitamin C. We present a case of scurvy in a 14-year-old male with autism with both novel presentation and imaging findings. This case had the novel presentation of lower limb deep vein thrombosis (DVT) secondary to compression of the external iliac vein from large bilateral iliac wing subperiosteal hematomas. Subperiosteal hematoma is a well-recognised feature of scurvy but large and bilateral pelvic subperiosteal hematoma causing DVT has not previously been described.
    METHODS: A 14 year old Caucasian male with background of autism and severe dietary restriction presented with lower limb swelling and immobility. He was diagnosed with lower limb DVT. Further investigation revealed an iron deficiency anaemia, and he was found on MRI to have large bilateral subperiosteal iliac hematomata causing compression of the iliac vessels. He improved following treatment with vitamin C replacement and follow-up imaging demonstrated resolution of the DVT and hematoma.
    CONCLUSIONS: DVT is rare in children and when diagnosed should prompt investigation as to the underlying cause. This case demonstrates an unusual cause of DVT and as an unusual presentation of paediatric scurvy.
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  • 文章类型: Case Reports
    镰刀,由于缺乏维生素C,有非特异性的体质症状,包括弱点,萎靡不振,和疲劳。由于缺乏特异性临床表现,常被误诊。虽然目前报道的儿童有零星的镰刀病病例,在年轻人中很少遇到镰刀病。这里,我们报道了一名25岁的男性患者,该患者没有任何基础疾病,出现严重的双下肢疼痛和瘀斑.由于长期呆在室内和水果或蔬菜摄入不足,他被诊断出患有风湿病。
    Scurvy, resulting from vitamin C deficiency, has nonspecific constitutional symptoms, including weakness, malaise, and fatigue. It is frequently misdiagnosed due to the lack of specific clinical manifestations. Although there are sporadic cases of scurvy currently reported in children, scurvy in young people is seldom encountered. Here, we report on a 25-year-old male patient without any underlying conditions who presented with severe pain and ecchymoses of both lower extremities. He was diagnosed with scurvy due to a long history of staying indoors and inadequate intake of fruits or vegetables.
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  • 文章类型: Case Reports
    维生素C缺乏的全身并发症,也被称为镰刀病,历史上有很好的记载.很少有病例报告记录了严重的心肺并发症,例如右心衰竭(RHF)和肺动脉高压(PH)。
    一名25岁的女性因两周的进行性疲劳被送往医院,呼吸困难,肌痛,和Arthralgias.她因需要输血的症状性贫血入院。她的症状持续存在,出现严重的PH和RHF,并发心源性休克和多次心脏骤停。她被发现患有严重的维生素C缺乏症,继发于严重的自我限制饮食。补充维生素C后,患者RHF和PH完全缓解。
    此病例增加了文献中有关维生素C缺乏的严重心肺并发症的文献。我们认为,这是第一例引起RHF和PH并导致心源性休克和心脏骤停发作的镰刀病成人病例。有多种假说的发病机制,与相关的PH和RHF,包括缺氧诱导转录因子的过度激活和维生素C的血管舒张作用的缺乏,这种作用通过增加内皮细胞中的一氧化氮产生而起作用。当被识别时,早期补充维生素C可以预防严重的胰腺炎心肺并发症。
    UNASSIGNED: The systemic complications of vitamin C deficiency, otherwise known as scurvy, have been well-documented in history. Few case reports have documented severe cardiopulmonary complications such as right heart failure (RHF) and pulmonary hypertension (PH).
    UNASSIGNED: A 25-year-old female presented to the hospital with two weeks of progressive fatigue, dyspnoea, myalgias, and arthralgias. She was admitted for symptomatic anaemia requiring transfusion. Her symptoms persisted and she developed severe PH and RHF, complicated by cardiogenic shock and multiple episodes of cardiac arrest. She was found to have severe vitamin C deficiency secondary to a severely self-restricted diet. After repletion of vitamin C, the patient had complete resolution of RHF and PH.
    UNASSIGNED: This case adds to the sparse literature documenting severe cardiopulmonary complications of vitamin C deficiency. We believe that this is the first adult case of scurvy causing RHF and PH leading to cardiogenic shock and episodes of cardiac arrest. There are multiple hypotheses on the pathogenesis of scurvy-associated PH and RHF, including overactivation of hypoxia-inducible transcription factors and deficiency of vitamin C\'s vasodilatory effect that acts through increased nitric oxide production in endothelial cells. When recognized, early vitamin C repletion may prevent severe cardiopulmonary complications of scurvy.
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  • 文章类型: Case Reports
    镰刀是一种罕见的临床综合征,由长期缺乏维生素C引起,在海湾地区并不常见。它可以表现为非特异性症状,使诊断和治疗具有挑战性。在儿科患者中,症状可能包括体重减轻,嗜睡,低烧,不同程度的贫血,容易瘀伤或出血,关节和肌肉疼痛,伤口愈合不良。尽管许多海湾国家在医疗保健方面取得了进步,营养缺乏仍然可能发生在某些人群中。因此,这对儿科医生来说很重要,骨科医生,风湿病学家,和放射科医生在对低年级儿童的评估中考虑镰刀,多系统参与。我们报告了一例6岁男孩,他多次出现在急诊科(ED),并伴有进行性右(RT)腿部疼痛。临床表现和影像学发现提示慢性复发性多灶性骨髓炎(CRMO)。尽管症状进展,最终诊断为镰刀病,用维生素C治疗可迅速缓解其症状。该病例强调了在多系统受累儿童的鉴别诊断中考虑镰刀的重要性。特别是在营养缺乏可能更普遍的地区。
    Scurvy is a rare clinical syndrome resulting from prolonged vitamin C deficiency and is uncommon in the Gulf area. It can present with non-specific symptoms, making diagnosis and treatment challenging. In pediatric patients, symptoms may include weight loss, lethargy, low-grade fever, anemia of varying degrees, easy bruising or bleeding, joint and muscle pain, and poor wound healing. Despite advances in healthcare in many Gulf countries, nutritional deficiencies can still occur in certain populations. Therefore, it is important for pediatricians, orthopedists, rheumatologists, and radiologists to consider scurvy in the evaluation of children with low-grade, multisystemic involvement. We report a case of a six-year-old boy who presented to the emergency department (ED) multiple times with progressive right (RT) leg pain. The clinical picture and imaging findings suggested chronic recurrent multifocal osteomyelitis (CRMO). Despite symptom progression, scurvy was ultimately diagnosed and treatment with vitamin C led to rapid resolution of his symptoms. This case highlights the importance of considering scurvy in the differential diagnosis of children with multisystemic involvement, especially in regions where nutritional deficiencies may be more prevalent.
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  • 文章类型: Case Reports
    在二十一世纪,小儿镰刀病并不常见,但在患有神经发育问题和饮食限制的儿童中已经报道了病例。我们报告了一个两年零九个月大的男孩,他感染了冠状病毒病(COVID),然后拒绝走路。通过仔细记录历史,他被发现限制饮食,说话延迟,和牙龈出血提示的镰刀病,抗坏血酸含量极低证实了这一点。在这种情况下,在建立神经发育迟缓的诊断之前,已经建立了对镰刀病的诊断。用抗坏血酸治疗可显著改善他的症状。这个案例突出了收集完整历史的重要性,将考试结果与历史联系起来,并在鉴别诊断中包括不能承受体重的表现。
    Pediatric scurvy is uncommon in the twenty-first century but cases have been reported in children with neurodevelopmental issues and restricted diets. We are reporting a two-year and nine-month-old boy who had a coronavirus disease (COVID) infection and then presented with a refusal to walk. By careful history-taking, he was found to have a restricted diet, speech delay, and gum bleeding suggestive of scurvy, which was confirmed by extremely low levels of ascorbic acid. In this case, the diagnosis of scurvy was established before establishing the diagnosis of neurodevelopmental delay. Treatment with ascorbic acid resulted in a remarkable improvement in his symptoms. This case highlights the importance of collecting a thorough history, connecting exam findings to the history, and including scurvy in differential diagnoses for the presentation of inability to bear weight.
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  • 文章类型: Case Reports
    儿科胃肠病学家通常负责在选择性饮食的情况下评估营养不良。对包括嗜酸性粒细胞性食管炎和乳糜泻在内的疾病进行内窥镜评估可以帮助识别和治疗导致食物选择性的粘膜疾病。然而,未确诊的微量营养素缺乏会导致心血管紊乱,显著增加患者的麻醉风险。特别是维生素C缺乏,单独或与严重营养不良相结合,与严重但可逆的肺动脉高压有关,虽然在急性期危及生命,可能在开始抗坏血酸替代疗法后的几天内显着改善。这里我们介绍一个6岁的自闭症谱系障碍(ASD)男孩,严重的营养不良,和未诊断的慢性维生素C缺乏症,在全麻诱导后出现肺动脉高压危象,导致内镜评估期间心脏骤停。虽然有很好的描述了年轻人的食物选择性与神经发育差异和维生素C缺乏之间的关联,肺动脉高压是一种公认的罕见的镰刀病并发症,现有文献还没有提出改善患者预后的下一步措施.使用此案例报告作为基础,我们讨论了特定的患者人群在麻醉前筛查和治疗微量营养素缺乏的问题,并提出了一种新的临床算法,用于在有特定的镰刀症和相关肺动脉高压风险的患者中进行麻醉前风险分层和缓解.
    Pediatric gastroenterologists are often responsible for the evaluation of malnutrition in the setting of selective eating. Endoscopic evaluation for conditions including eosinophilic esophagitis and celiac disease can help to identify and treat mucosal disease contributing to food selectivity. However, undiagnosed micronutrient deficiencies can cause cardiovascular derangements that significantly increase a patient\'s anesthetic risk. Vitamin C deficiency in particular, alone or in combination with severe malnutrition, is associated with a severe but reversible form of pulmonary arterial hypertension that, while life threatening in the acute phase, may significantly improve within days of starting ascorbic acid replacement therapy. Here we present a case of a 6-year-old boy with autism spectrum disorder (ASD), severe malnutrition, and undiagnosed chronic vitamin C deficiency who developed a pulmonary hypertensive crisis after induction of general anesthesia leading to cardiac arrest during endoscopic evaluation. While the association between food selectivity among youth with neurodevelopmental differences and vitamin C deficiency is well-described, and pulmonary hypertension is a recognized rare complication of scurvy, extant literature has not addressed next steps to improve patient outcomes. Using this case report as a foundation, we discuss specific patient populations to screen and treat for micronutrient deficiencies prior to anesthesia and propose a novel clinical algorithm for pre-anesthesia risk stratification and mitigation in patients specifically at risk for scurvy and associated pulmonary hypertension.
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  • 文章类型: Journal Article
    Identifying social determinants of health can help diagnose certain nutritional deficiencies. By overcoming these barriers, we can prevent future hospitalizations and better public health. We present a unique case where a 46-year-old man presents with bilateral lower extremity swelling secondary to vitamin C deficiency. Throughout history taking, his social determinants of health were identified and he was diagnosed with scurvy from the suspected poor nutritional intake. His poor nutritional intake could have resulted from a lack of financial stability and a harsh home environment. This case is evidence that social determinants of health can directly impact a patient\'s well-being, and as physicians, we need to identify them to provide the most resources we can to help improve patient care. This in turn can decrease unnecessary emergency room visits and hospitalizations.
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