What causes Raynaud s syndrome

Raynaud's syndrome** is unclear and may be related to the following factors.

1) Dysfunction of the central nervous system, making the sympathetic nervous system hyperfunctional.

2) Increased levels of epinephrine and norepinephrine in the blood circulation.

3) The condition often worsens during menstruation and decreases during pregnancy, so it is thought to be endocrine-related.

4) Defects in the arterioles of the limbs, caused by overreaction to normal physiological phenomena.

5) Patients often have a family history, suggesting a possible genetic relationship.

6) Immune factors: Autoimmune antibodies can be detected in the serum of some patients, suggesting that it is related to abnormal immune function.

7) Vascular diseases: such as arterial stenosis and occlusion caused by insufficient blood supply.

8) Physical factors such as shock injury, direct arterial trauma, cold injury, etc.

9) Caused by certain drugs: such as ergot, lead, thallium, arsenic and other poisoning, receptor antagonists, cytotoxic drugs, contraceptives, etc., resulting in vasospasm, injury, tissue ischemia and hypoxia.

10) Factors affecting neurovascular mechanisms: such as cervical rib and anterior scalene syndrome, thoracic outlet syndrome, improper compression of the axillary area by crutches, compression of the brachial plexus and subclavian vessels by tumors, peripheral neuritis, syringomyelia or tabes dorsalis, etc.

Raynaud's syndrome is ischemia caused by spastic or functional occlusion of small blood vessels in the extremities. Common in young women. It is usually induced by local cold or emotional agitation, and is clinically characterized by paroxysmal symmetrical intermittent cyanosis of the extremities, paresthesias, and digital pain.

Raynaud's syndrome may be associated with:

First, the theory of vasospasm is mostly believed to be caused by the spastic or functional occlusion of blood vessels.

Second, arterial constriction hypersensitivity, due to the increased sensitivity of the arteries themselves to cold.

Third, changes in the structure of the blood vessel wall, there may be changes in the tissue structure of the blood vessel wall, which will have an abnormal reaction to the impulse in normal vasoconstriction and the adrenaline content in the blood flow.

Fourth, genetic factors, some patients often have vasospasm in their families.

Raynaud's syndrome is a group of syndromes in which the fingers (toes) turn pale, purple and then flush due to cold or emotional agitation. If there is no specific cause, it is called idiopathic Raynaud's syndrome; Secondary to other disorders is called secondary Raynaud syndrome.

It mostly occurs in 20-40 years old, more in women than in men. The onset is slow, starting in winter, and the duration is short, and the onset can be triggered by cold or emotional agitation. It is usually symmetrical in both hands and fingers, but also in the toes.

The hands and feet are cold, numb, and occasionally painful during the attack. Typical seizures are bounded by metacarpophalangeal joints, and the fingers become cold, pale, purple, and then flushed. In the later stages of the disease, hair on the back of the fingers disappears, nails grow slowly, roughly, and deformed, atrophied, thinned, and tightened (scleroderma fingers), sores form around the fingertips or nail beds, and infections can occur.

Raynaud's syndrome is a clinical group of symptoms in which the triad of pallor, cyanosis, and flushing appears at the ends of the fingers or toes in the presence of cold, agitation, and vibration of the limbs. In the presence of the above predisposing factors, the extremity distal arteries will be spasmodic, the blood supply of the acrals will be insufficient or even interrupted in a short period of time, the phenomenon of acral pallor will appear, and under the action of hypoxia-inducing factors, local dilation and blood stasis, resulting in cyanosis. As the stasis subsides, flushing occurs.

The root cause of Raynaud's syndrome is the spasm of the acral arterioles, mild spasm will cause numbness and pain in the extremities, and severe spasms will cause gangrene at the end of the acrals to ulce or even fall off, which can be prevented and treated by a combination of Chinese and Western.

Raynaud's disease is a vascular disease, the early symptoms of this kind of disease are the discoloration of the fingers or wounds, the normal ** color will become bright red, and the injury will continue to have a feeling of anesthesia, which will seriously affect the patient's physical activities.

What are the early symptoms of Raynaud syndrome? How is Raynaud's disease**?

What is the pathogenesis of Raynaud's disease?

The fingers and toes will be whitish and purple, and they will slowly turn flushed, and the limbs will be cold, and it is easy to ulcerate.

It will become pale, sweaty, and numb, and some people will also tingle and have a cold body, which is an early condition.

The early symptoms are arterial spasm, which can cause pale toes or fingers, ischemia, and pale hands and feet, which turn purple after paleness.

Knot's disease, also known as Raynaud's disease, Raynaud's phenomenon, and acral arterial spasm, belongs to the category of "hand and foot cold" in traditional Chinese medicine, and mostly occurs in the fingers, toes, ears, nose, etc., during the attack, the patient's fingers and other places are numb and tingling, ** the color suddenly turns white, then turns into bruising, and then turns to flushing, showing intermittent attacks, often starting from the tip of the little finger and ring finger, and gradually expanding to the entire finger and even the palm as the lesion progresses.

Raynaud's Syndrome (alias: Du Raynaud Phenomenon) is a pathophysiological change characterized by pallor, cyanosis and flushing of both hands induced by cold or emotional factors.

This sign is caused by episodic spasms of the digital arteries, more commonly in young women, and is more common in the hands and fingers, but can also involve the feet and toes.

This is not clear Ah, I know it is peripheral vascular disease, you can go to Xijing Hospital in Beijing to ask for the specific ** steps.