手冷:你的手总是冷的5个可能的原因

手冷:你的手总是冷的5个可能的原因

Having cold hands on a freezing day is perfectly normal. But what if your hands are always cold even in a sunny, warm weather?

在寒冷的天气里双手冰凉是很正常的。但如果你的手即使在阳光明媚、温暖的天气里也总是冰凉怎么办?

When you step outside on a cold day, you will feel your hands are freezing. This is completely normal because in extreme conditions, the body will prioritize warming the vital organs of the body (such as the heart, brain and lungs) and then the limbs. However, if your hands are always cold even in warm weather, this could be a sign of a health problem.

当你在寒冷的天气走在外面时，你会感到你的手在结冰。这是完全正常的，因为在极端情况下，身体会优先加热身体的重要器官(如心脏、大脑和肺)，然后是四肢。然而，如果你的手即使在温暖的天气里也总是冰凉，这可能是健康问题的迹象。

1. Raynaud's syndrome

雷诺氏综合症

The disease is a common cause of cold fingers, due to the narrowing of small blood vessels in the fingers - sometimes blood vessels in the toes, ears and nose - due to response to cold weather. During Raynaud's attack, the body restricted flow to the limbs. This makes the fingers and toes feel cold, numb, and painful and then turn white or bluish purple. When the blood vessels are enlarged and blood flow returns, the fingers are warm, may become red and begin to have a beating again. In most cases, people still do not understand the cause of Raynaud's syndrome. The good news is that this syndrome is mostly annoying, more uncomfortable than harmful to the body. Changing a bit of your routine such as wearing warm, wearing gloves when the weather is cold (even when taking food in the fridge), and limiting stress or strong emotion is often enough to control the well this disease.

这种疾病是导致手指变冷的常见原因，由于天气变冷，手指上的小血管(有时是脚趾、耳朵和鼻子上的血管)会变窄。在雷诺的攻击中，身体限制了四肢的血流。这会使手指和脚趾感到寒冷、麻木和疼痛，然后变成白色或蓝紫色。当血管扩张、血液回流时，手指就会变暖、发红并开始再次跳动。在大多数情况下，人们仍然不了解雷诺综合征的病因。好消息是，这种综合症虽然很烦人，让人感到不适，但对身体的伤害不大。改变一下你的日常习惯，比如在天气冷的时候戴上手套(即使是在冰箱里吃东西的时候)，限制压力或强烈的情绪，通常都足以控制疾病。

2. Autoimmune disease

自身免疫性疾病

Sometimes a certain cause that originates from the immune system causes Raynaud's syndrome. Lupus - a disorder in which the immune system attacks the body's own tissues; Scleroderma - a disease that leads to sclerosis and scarring of the skin and connective tissue; Rheumatoid arthritis and several other autoimmune diseases can all lead to Raynaud's syndrome. This is called secondary Raynaud's syndrome. Once the main disease is diagnosed and well controlled, the symptoms of Raynaud's syndrome will improve on its own.

有时，免疫系统引发的特定原因会导致雷诺综合征。狼疮——免疫系统攻击身体自身组织的紊乱;硬皮病——一种导致皮肤和结缔组织硬化和瘢痕的疾病;类风湿关节炎和其他一些自身免疫性疾病都可以导致雷诺综合征。这被称为继发性雷诺综合征。一旦主要疾病被诊断出来并得到很好的控制，雷诺综合症的症状就会自行改善。

3. Hypothyroidism

甲状腺功能减退

Symptoms of cold limbs occur quite common in patients with hypothyroidism. The thyroid gland plays an important role in regulating body temperature. When the thyroid gland is impaired, most organs in the body will slow down and cause symptoms such as fatigue, constipation, weight gain and a cold feeling on the extremities. Hypothyroidism is one of the common diseases in women and people over 50 years old.

在甲状腺功能减退的患者中，四肢冰冷的症状很常见。甲状腺在调节体温方面起着重要的作用。当甲状腺受损时，身体的大部分器官会变慢，引起疲劳、便秘、体重增加和四肢发冷等症状。甲状腺功能减退症是妇女和50岁以上人群的常见病之一。

4. Vitamin B12 deficiency

维生素B12缺乏症

Vitamin B12, rich in red meats, poultry, eggs, milk and dairy products, plays a very important role in the formation of red blood cells. A deficiency of this vitamin can lead to a decrease in the production of red blood cells (and consequently anemia). Vitamin B12 deficiency is quite common among vegetarians, and people over 50 may impair their ability to absorb this vitamin from food. People with some digestive disorders like Crohn's disease or Celiac disease are also at risk of B12 deficiency. A simple blood test can help find out if vitamin B12 deficiency is the cause of limb chills. If that's the main reason, taking a B12 supplement can help resolve symptoms within weeks to a month.

维生素B12在红肉、家禽、鸡蛋、牛奶和乳制品中富含，对红细胞的形成起着非常重要的作用。缺乏这种维生素会导致红细胞减少(从而导致贫血)。维生素B12缺乏在素食者中很常见，50岁以上的人可能会削弱他们从食物中吸收维生素B12的能力。有些消化系统紊乱的人，如克罗恩病或乳糜泻，也是缺乏B12的风险。一个简单的血液测试可以帮助发现维生素B12缺乏是否是四肢发冷的原因。如果这是主要原因，服用B12补充剂可以在几周到一个月内帮助缓解症状。

5.Stress and anxiety

压力和焦虑

Stress can have a lot of effects on your body, and your hands are no exception. When you experience prolonged stress and anxiety, your body goes into a "fight or run away" stage. Increased adrenalin levels cause constricting of the limb vessels leading to cold hands and toes (as well as the feet and toes). Therefore, having good stress management can help alleviate your symptoms.

压力会对你的身体产生很多影响，你的手也不例外。当你经历长时间的压力和焦虑时，你的身体会进入一个“战斗或逃跑”的阶段。肾上腺素水平升高会导致四肢血管收缩，导致手和脚趾(以及脚和脚趾)冰凉。因此，良好的压力管理有助于缓解症状。