Health encyclopaedia 健康百科全书

Health encyclopaedia - Alphabetical Topic List健康百科全书-按字母顺序排列的主题清单

Periods期

Your period is a bleed from the vagina that happens approximately every 28 days (between 24 and 35 days is common).您的时期，是一个流血从阴道这种情况发生，大约每28天（ 24至35天是常见的） 。

Your periods will usually start somewhere between the ages of 9- 16 years, most commonly between 12 and 13 years.您的时期，通常会开始某处年龄介于9 -1 6年来，最常见的为1 2至1 3年。 They continue until the menopause, which is usually between 45 and 55 years.他们继续下去，直到更年期，这是通常之间的45和55年。

As a baby girl you are born with all your eggs stored in follicles (sacs) in your ovary .作为一名女婴您是出生与您所有的鸡蛋储存在卵泡（囊）在您的卵巢。 As puberty begins, your body begins to produce hormones that cause your eggs to mature.作为青春期开始，你的身体开始产生激素导致您的卵子成熟。 This is the beginning of your first menstrual cycle .这是开始你的第一个月经周期。

Having periods is part of the female reproductive cycle.有时间的一部分，女性生殖周期。 Your cycle begins on the first day of bleeding and continues up to, but not including, the first day of your next period.您的周期开始的第一天就出血，并继续最多，但不包括，第一天您今后一个时期。

During a cycle various changes occur in your body.在一个周期的各种变化发生在你的身体。 These are caused by the variations in the amount of various hormones, which are produced by your body at different times of your cycle.这些都是所带来的变化，数额各种激素，它是由你的身体在不同时期您的周期。

• Symptoms 症状
• Causes 原因
• Treatment 治疗

• Paget's disease Paget病 Painkillers 止痛药 Pancreatitis 胰腺炎 Panic disorder 惊恐症 Parkinson's disease 帕金森氏病 Patient Advice and Liaison Services 病人的咨询和联络服务 Patient and Public Involvement Forums 病人和公众参与论坛 Patient choice 病人的选择 Pelvic inflammatory disease 盆腔炎 Pemphigus vulgaris 天疱疮 Peptic ulcer 消化性溃疡 Perforated eardrum 鼓膜穿孔 Pericarditis 心包炎 Periods 期 Periods, absent 期间，缺席 Periods, heavy 期间，重型 Periods, irregular 期间，不规则 Periods, painful 期间，痛苦 Peritonitis 腹膜炎 Persistent vegetative state 持续性植物状态 PET scan 宠物扫描 Phenylketonuria 苯丙酮尿症 Phobias 恐惧症 Phosphate test 磷酸盐测试 Physiotherapy 物理治疗 Pilonidal sinus 毛窦 Plasma products 血浆制品 Plastic surgery 整形外科 Pleurisy 性胸膜炎 Pneumococcal infections 肺炎球菌感染 Pneumonia 肺炎 Poisoning 中毒 Poliomyelitis 脊髓灰质炎 Polycystic ovarian syndrome 多囊卵巢综合征 Polymyalgia rheumatica polymyalgia rheumatica Polyps, nose 息肉，鼻 Post-mortem 剖验 Post-natal depression 产后抑郁症 Post-traumatic stress disorder 创伤后应激障碍 Potassium test 钾测试 Pre-eclampsia 先兆子痫 Preconception 先入为主 Pregnancy 怀孕 Premenstrual syndrome 经前期综合征 Preoperative tests 术前测试 Pressure ulcers 压力溃疡 Priapism 阴茎异常勃起 Prickly heat 刺热 Primary biliary cirrhosis 原发性胆汁性肝硬化 Progestogen-only pill progestogen只丸 Prolapse of the uterus 脱垂的子宫 Prostate disease 前列腺疾病 Psoriasis 银屑病 Psychiatry 精神病学 Psychosis 思觉失调 Psychotherapy 心理治疗 Puberty 青春期

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