Purple skin on hands

Introduction The parietal artery is paroxysmal. It is often caused by factors such as cold irritation or emotional agitation, which is characterized by intermittent pale, purpura and flushing changes in the skin color of the extremities. Generally, the upper limbs are heavier and occasionally seen in the lower limbs. Thus, blood flow to the skin is reduced or absent.

Cause

Cause: Purple skin may be suffering from purpura. It may also be that cold stimuli, emotional hormones or mental stress are the main motivating factors. Other causes are infection, fatigue, etc. Because the condition often worsens during the menstrual period and is relieved during pregnancy, some people think that this disease may be related to gonadal function due to hypoxia and accumulation of metabolites, which may cause the capillaries to expand slightly including the small veins, and a small amount of blood flows into the capillary. The blood vessels, after rapid deoxygenation, cause cyanosis. Cyanosis occurs when the arterial spasm has subsided and the venous fistula is still present. The extremity vasospasm is relieved, and a large amount of blood enters the dilated capillaries, which is reactive hyperemia, and the skin color turns into flushing. When there is a normal amount of blood flow through the small artery, the capillary perfusion is normal, the episode is stopped, and the skin color returns to normal.

1, heart disease, such as purpura type heart disease;

2, limb hypoxia, such as Raynaud's phenomenon or syndrome;

3. Other reasons.

an examination

Related inspection

Blood test arterial patency test skin test

Diagnosis: The typical skin lesions of the purpura are scattered spots or ecchymoses from the needle tip to the size of the soybean. They may also be erythema, maculopapular rash, blisters or wheal-like lesions. They are often symmetrically distributed on the extremities and buttocks of the extremities, and more common in the calves. Conscious pruritus, there are no symptoms. Skin lesions gradually turn into brown spots in 1-1-2 weeks, and there are repeated episodes, some of which last for several years. In a special examination, the nerve conduction velocity of the upper limbs is measured to find possible carpal tunnel syndrome. Hand X-ray film helps to detect rheumatoid arthritis and finger calcification.

Differential diagnosis

Differential diagnosis of hand skin purple:

1. Violet: It is a chronic inflammatory skin disease of unknown cause. It is a purple-red polygonal flat papule with a waxy luster on the surface and severe itching as a clinical feature. The skin lesions were purple-red, polygonal flat papules. At the beginning, the cap or chestnut is large, which can be gradually increased to such as lentils or broad beans. The edge is clear, the surface is dry and smooth, and there is a thin white colloidal film. When there is waxy, sometimes the rash has a central dimple. Tiny angle plug. It is usually in the form of a triangular white or gray-red spot on the scalp. The edge is bulged, the center is sunken, the hair follicle has a horn plug, and the skin lesion is scarred for a long time. Milky white spots, small spots isolated, or arranged in a ring, linear or irregular network. Occurred in the oral cavity is more common in the cheeks opposite the caries. Oral mucosa and lips, labia lithos are easy to become cancerous.

2. Fuchsia palm: purple red palm: If the palm color is black, red, black and red, it is purple-red palm. It is necessary to consider serious heart disease, such as coronary heart disease, asthma, etc. When inflammation is not controlled to the development of sepsis The palm color will also return to the microcirculation and cause blood purple. At this time, the danger signal should be improved early.

Diagnosis: The typical skin lesions of the purpura are scattered spots or ecchymoses from the needle tip to the size of the soybean. They may also be erythema, maculopapular rash, blisters or wheal-like lesions. They are often symmetrically distributed on the extremities and buttocks of the extremities, and more common in the calves. Conscious pruritus, there are no symptoms. Skin lesions gradually turn into brown spots in 1-1-2 weeks, and there are repeated episodes, some of which last for several years.

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