儿童尿频:膀胱过度活动症详解

最后更新: 2026 年 8 月 30 日

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我的泌尿外科门诊不仅接待成人，也接待儿童，其中最常见的主诉之一就是排尿过于频繁。尿频通常与尿急同时出现，两者合在一起，我们称之为 膀胱过度活动症（OAB）。据报道，约 23% 的 5 岁儿童会出现这种情况，到 13 岁时降至约 12%。这些数字说明它常会随着时间改善，但在此期间仍值得认真对待，因为它会打击孩子的自尊心，并影响其成长发育和学业。

首先要对家长说一句：孩子突然每隔半小时就要上厕所，并不是调皮、想博取关注或偷懒。这种尿意是真实的，他们无法像成年人那样憋住。把它当作行为问题而不是膀胱问题来对待，是最容易让这些孩子对自己感到难过的一件事。

首先要说明:哪些情况并不是膀胱过度活动症

本文的绝大部分内容讨论的是一种常见、可以管理、没有危险的问题。但是,孩子排尿非常频繁,偶尔也可能是需要尽快处理的某种疾病的最初信号,而这些信号恰恰容易被忽视,因为大家都以为这只是膀胱习惯问题。请先阅读这一小段,再继续阅读其余内容。

最需要重视的是新发糖尿病。 在儿童中,糖尿病往往表现得与膀胱问题一模一样——全天排出大量尿液,有时已经很久不尿床的孩子又开始夜间尿湿。关键线索在于伴随的其他表现。如果您的孩子 饮水量异常增多,总是口渴,尤其是同时还有 体重下降、疲倦、异常饥饿或视力模糊，这种组合需要当天做血糖检测，而不是制定控尿方案。在长时间不尿床之后又重新出现尿床，是糖尿病公认的一种表现：在一项针对新确诊儿童的全国性研究中，5 岁以下儿童中约有五分之一、5 至 9 岁儿童中近三分之一出现这种情况。

如果出现以下任何一种情况，请立即前往急诊科——在泰国请拨打 1669：

• 腹痛、呕吐、呼吸深而快或异常急促、明显脱水，或孩子嗜睡、难以唤醒 ——如果同时有上述口渴和排尿频繁的表现，这就是糖尿病急症，约有三分之一的儿童在确诊糖尿病时就已经处于这种状态。
• 发热并伴有背部或腰侧疼痛，或孩子整体不适，并伴有排尿疼痛和灼热感——这提示的是感染，而不是膀胱过度活动。
• 尿中带血。
• 完全无法排尿，或排尿时需要用力，同时下腹部肿胀不适。

如果出现以下情况，请预约普通门诊就诊，不要一味观望：排尿频繁 It suddenly appeared on a child who hadn't wet the bed for a long time.Or, the child may exhibit any weakness, numbness, changes in gait, or small dents, tufts of hair, or birthmarks on the lower back. These are not common, but they suggest the problem may not lie in the bladder, but in the nerves that control it—which is why checking the lower spine, legs, and the child's gait is a standard step in the evaluation, rather than an afterthought.

怎样才算 过于频繁

• 白天 ——每次尿量少,一天排尿超过 8 次
• 夜间 ——夜里醒来排尿一次或多次

The key words that play a diagnostic role here are UrgencyOveractive bladder refers to frequent urination. Plus A sudden urgency to urinate that a child cannot delay. If the child simply urinates frequently but in small amounts each time, without urgency or wetting their pants, and sleeps perfectly normally at night, the situation may be different and more reassuring—this is a benign, self-limiting pattern that often occurs after stress or a minor illness and resolves on its own. It's still worth getting checked out, but this is not the same problem as the former and does not require the same treatment.

The assessment itself is actually very simple and does not require high-tech methods. It mainly relies on medical history, A two- to three-day urination diaryBowel examination, physical examination, and urine examination (Linde et al., 2025)Imaging studies will be performed later and only for children who do not respond to treatment or show any of the aforementioned warning signs. Keeping a urination diary for several days before the appointment is indeed one of the most helpful things parents can do.

如何治疗

通过完整的病史询问、体格检查和实验室检查确诊后,治疗分为两个阶段,其中第一阶段起到最主要的作用。

1. 保守措施 ——向孩子和家人解释病情,每 2–3 小时定时排尿,采用正确的排尿方式,睡前减少饮水,避免咖啡因、巧克力、柑橘类和碳酸饮料,并治疗便秘。 便秘尤其需要重视:充满粪便的直肠会压迫膀胱,仅仅清除直肠内的粪便就能使数量惊人的病例得到缓解。
2. 口服药物 ——奥昔布宁是美国 FDA 唯一批准用于儿童膀胱过度活动症的药物。它的副作用有规律可循,也便于向家长解释:口干、眼干、皮肤干燥和便秘。最后一点尤其重要,因为便秘本身就是诱因,所以孩子用药期间需要密切观察。

Two things parents are rarely told about this medication

It reduces sweating, which is important in such hot countries. Children who cannot sweat properly cannot dissipate heat effectively. This is not just a theoretical concern—the medication label contains a formal warning that taking this medication in hot environments may lead to fever and heatstroke due to reduced sweating. Children are more susceptible than adults because their thermoregulation is less efficient and they are more active. Therefore: keep children well-hydrated, exercise caution when engaging in strenuous exercise in high temperatures or spending extended periods outdoors in the afternoon, and be especially careful when children are feverish or sick. If a child exhibits flushed face, abnormally high temperature, confusion, or fails to sweat when they should, discontinue the medication and consult a doctor that same day.

It can occasionally affect mood and alertness. Oxybutynin can enter the brain, so agitation, confusion, drowsiness, and (less rarely) hallucinations are known adverse reactions, most commonly occurring in the first few months of use or after increasing the dose. Reassuringly (I emphasize this because it often worries parents): studies specifically investigating the effects of this drug on children's attention and memory have not found any damage. (Stein et al., 2020)Therefore, this is something that needs to be noticed and reported promptly, not something that will definitely happen. If it does occur, the dosage can be reduced or other medications can be used—there are currently several alternative medications available, which are used when oxybutynin is not suitable for the child. Blurred vision and facial flushing are also common and are dosage-related.

对于治疗无效的严重病例,还有其他选择——多种超说明书使用的口服药物,以及膀胱内注射肉毒毒素。 Bangkok Hospital Headquarters (BHQ) 不开展膀胱肉毒毒素注射;如果孩子需要这项治疗,可以安排转诊到提供该治疗的儿科中心。

不过,治疗中最重要的部分并不是开药,而是同时向孩子和家人进行咨询指导,并共同商定一个切合实际的目标——减少尿失禁的次数,让孩子不再为上学而焦虑,而不是期望下周就拥有一个完美的膀胱。这方面的进展要以月为单位来衡量。

I have one request for every family that comes to me for treatment: Please do not scold or punish your child for wetting themselves. Children with this problem are already embarrassed and often hide their wet underwear. This shame only makes the situation worse, not better. Praise your child's regular habits—going to the toilet on time, drinking plenty of water during the day—rather than just praising days without wet diapers, because regular habits are what they truly have control over.

常见问题

问题1:儿童尿频达到什么程度属于异常?

如果孩子白天排尿超过8次且每次尿量很少,或夜间有一次或多次排尿(夜尿症),则属于儿童尿频异常。当尿频同时伴有突然出现的强烈尿意时,称为膀胱过度活动症(OAB),5岁儿童中约有23%受此影响。

Question 2: Could frequent urination in children be a sign of diabetes?

This is precisely why it's wrong to assume it's a bladder problem without examination. Typical symptoms of type 1 diabetes in children include excessive urination, extreme thirst, and weight loss, often accompanied by fatigue, increased hunger, or blurred vision. Recurrence of bedwetting after a long period of bedwetting is also a recognized symptom—in a national study of newly diagnosed children, this occurred in about one-fifth of children under 5 years old and nearly one-third of children aged 5 to 9. In these cases, blood sugar should be tested on the same day, rather than a bladder training program being developed. If accompanied by abdominal pain, vomiting, rapid and deep breathing, dehydration, or drowsiness, go to the emergency room immediately: approximately one-third of children are diagnosed with diabetic ketoacidosis.

Question 3: What are the causes of overactive bladder (OAB) in children?

儿童OAB的病因包括膀胱发育不成熟、咖啡因、巧克力、柑橘类和碳酸饮料等饮食诱因、便秘(会压迫膀胱)、尿路感染,以及行为或心理因素。在许多情况下,找不到单一明确的病因,随着年龄增长和适当的管理,病情会逐渐改善。

Question 4: How to treat frequent urination in children?

治疗从保守措施开始,包括每2-3小时定时排尿、避免刺激膀胱的食物和饮品(咖啡因、柑橘类、碳酸饮料)、睡前减少液体摄入、教导正确的排尿方法以及处理便秘。当保守治疗效果不佳时,目前美国FDA唯一批准用于儿童OAB的口服药物是奥昔布宁(Oxybutynin),但其副作用可能包括口干、眼干和便秘。

Question 5: What precautions should be taken when using oxybutynin in hot weather?

It is important to note, especially in hot weather, that oxybutynin reduces sweating. The product information leaflet clearly warns that reduced sweating when taken in hot environments may lead to fever and heatstroke. Children are more susceptible than adults because they have weaker thermoregulation and are more active. Ensure your child stays well-hydrated. Exercise caution with strenuous exercise and prolonged outdoor activities in hot weather, and be especially careful when your child is feverish or sick. If your child experiences flushed face, unusually high fever, confusion, or fails to sweat when they should, discontinue medication and consult a doctor that same day.

Question 6: Will oxybutynin affect my child's attention or behavior?

This is something to be aware of, but pediatric research evidence is reassuring. Oxybutynin can enter the brain, and the effects listed in the drug's instructions include irritability, confusion, drowsiness, and, rarely, hallucinations, which are most likely to occur in the first few months of use or after increasing the dose. However, studies specifically on the attention and memory of children taking the drug have not found any impairment. If any behavioral changes, unusual inattention, drowsiness, or irritability occur, inform your doctor promptly and do not assume it is unrelated to the medication—your doctor can reduce the dose or switch to another medication. There are also several alternative medications available for children who are not suitable for oxybutynin. Blurred vision and facial flushing are also common and are dose-related.

Question 7: Will a child's frequent urination improve on its own as they grow older?

许多孩子会随着年龄增长而好转。随着膀胱容量和控制能力逐渐成熟,OAB的患病率从5岁时的约23%下降到13岁时的约12%。然而,未经治疗的OAB可能对孩子的自尊心和成长发育产生不良影响,因此及早进行适当的管理非常重要,而不应只是等待其自行缓解。

Question 8: When should I take my child to see a urologist if he/she urinates frequently?

If your child's frequent urination is affecting their daily activities, sleep, or learning performance; if your child has learned to use the toilet but is still wetting their pants during the day; or if their symptoms do not improve after weeks of consistent conservative treatment, you should consult a urologist. There are some situations where you shouldn't wait for a routine appointment: frequent urination accompanied by persistent thirst, weight loss, fatigue, or recurrence of bedwetting after a long period of not wetting the bed requires same-day evaluation; fever accompanied by back or side abdominal pain, painful or burning urination, blood in the urine, or inability to urinate also requires same-day attention. If thirst and frequent urination are accompanied by abdominal pain, vomiting, rapid and deep breathing, or drowsiness, it is an emergency.

Question 9: Does Dr. Soarawee see young children?

This clinic sees children aged 3 and older as a general urologist, not a pediatric urology subspecialist. Infants and toddlers under 3 years of age are not evaluated here and will be referred to a pediatric urologist. If a child requires treatment that is not available at Bangkok Hospital Headquarters, such as bladder botulinum toxin injections, we can arrange a referral to the children's specialist center.

Question 10: Can we communicate via video consultation first?

Yes, and this method is well-suited for these types of issues, as the initial consultation primarily involves taking a medical history and providing explanations. Bangkok Hospital Headquarters offers telemedicine services; appointments must be made in advance via email to the urology department at bhquro@bdms.co.th. Keeping a urination diary for two to three days beforehand, including the frequency of urination, approximate urine volume, whether there is wetness, and bowel movements, will make the consultation more effective. Physical examinations and urine tests still require an in-person visit to the hospital. Samitivej Sriracha only offers in-person consultations; please call the urology department at 088-022-1445 to make an appointment. If any of the above symptoms indicate a need for a same-day visit, please go to the emergency department instead of scheduling a video consultation.

If your child has symptoms of frequent urination or overactive bladder, Dr. Soarawee Weerasopone offers outpatient consultations for children aged 3 and older at Bangkok Hospital Headquarters (BHQ). 预约咨询。如需预约 Samitivej Sriracha Hospital 的门诊,请致电泌尿外科,电话: 088-022-1445For inquiries regarding consultation or treatment costs, please contact the hospital directly – Bangkok Hospital. Please send an email to [email address missing]. bhquro@bdms.co.th.

参考文献

• The International Children's Continence Society's standardized terminology on lower urinary tract function in children and adolescents. PubMed 28265323
• Linde JM et al. A critical review of guidelines for childhood daytime urinary incontinence. Neurourol Urodyn. 2025. doi:10.1002/nau.70047
• Stein R et al. EAU/ESPU Guidelines for the Management of Neurogenic Bladder in Children and Adolescents, Part 1. Neurourol Urodyn. 2020. doi:10.1002/nau.24211
• Roche EF, Menon A, Gill D, Hoey H. Clinical manifestations of type 1 diabetes. Pediatr Diabetes. 2005. doi:10.1111/j.1399-543X.2005.00110.x
• Jacobsen LM, Schatz DA. Type 1 diabetes. JAMA. 2026. doi:10.1001/jama.2026.0048
• Chancellor MB, Lucioni A, Staskin D. Oxybutine-related cognitive impairment: evidence and implications for the treatment of overactive bladder. 泌尿外科. 2024. doi:10.1016/j.urology.2023.11.033

免责声明: This content was written and reviewed by Dr. Soarawee Weerasopone, a urologist at Bangkok Hospital Headquarters (BHQ), and is for health education purposes only. It does not constitute medical advice and cannot replace an assessment of your child. We do not provide any medical advice, diagnosis, or prescription through private messaging channels or social media. Always consult a qualified medical professional before starting any medical treatment. In case of emergency, go to the nearest emergency room – in Thailand, the emergency number is 1669.