The weather is a bit cold and my nails turn purple, my breathing is short,

You may have Raynaud syndrome.

Patients often develop symptoms after catching a cold or having their fingers exposed to low temperatures. It can also be triggered by emotional excitement or mental stress. The characteristic of the attack is that the skin color of the toes suddenly turns white, then turns blue and purple, and then turns to flushing, showing intermittent attacks. It is more common on the fingers and less common on the toes. The attack often starts from the tip of the little finger and ring finger, and gradually extends to the entire fingers and even the palm as the disease progresses, but the thumb is less likely to be affected, accompanied by local coldness, numbness, tingling, soreness, discomfort, or other abnormal sensations. Systemic and local temperatures may decrease from time to time, but the pulse of the radial artery or dorsalis pedis artery is normal. At the initial onset, the attack usually lasts from a few minutes to half an hour and then resolves on its own. When the skin turns red, it is often accompanied by a burning and stinging sensation, and then returns to normal color. If you apply local heating, rub the affected limb, wave the limb, etc. during the attack, the attack can be stopped. As the disease progresses, symptoms worsen and attacks occur frequently. Each attack can last for more than an hour. Sometimes it is necessary to immerse the hands and feet in warm water to stop the attack.

Traditional Chinese medicine believes that purple and black are symptoms of cold and cold. If a female patient's hands and feet are cold, her fingertips are like white wax, followed by bruising, accompanied by dizziness, coldness and intolerance to the cold, late menstruation, less volume, pale color, pale tongue with white coating, and a deep and thready pulse, it is more common in patients with low metabolism or poor health. Weak women can take Wenjing Decoction to warm the menstruation and dispel cold, remove blood stasis and nourish blood.