Acute urticaria pictures

I believe that most people have experienced urticaria. Most of the urticaria is acute, with unbearable itching when it occurs, and may suddenly disappear after a few hours or a day. Some patients have recurrent attacks. In addition to itching, urticaria may also cause symptoms such as chest tightness, shortness of breath, panic, vomiting, and nausea. Relatively speaking, the cause of subacute urticaria is more established.

1. Photos of subacute urticaria

Subacute urticaria is a common clinical disease. It is an allergic skin disease characterized by itching, urticaria or angioedema. It is a localized edema reaction caused by the dilation of small capillaries in the skin and mucous membranes and increased permeability. The disease occurs subacutely, with itching and urticaria of varying sizes appearing all over the body. Wheals can combine to form large skin lesions or form a map-like lesion. The lips may swell, or the pharyngeal isthmus may swell, causing laryngeal edema, leading to difficulty breathing and even asphyxiation. The lesions usually disappear within a few hours, but new lesions continue to appear. The whole body may be accompanied by fever, asthma and shortness of breath, abdominal pain or bloating, and diarrhea. Severe patients may experience symptoms such as low blood pressure, dizziness, chest tightness and shortness of breath, and some may even go into shock. Most patients only have urticaria and itching, but no other symptoms.

2. Causes of subacute urticaria

1. Poor diet.

Some patients do not pay much attention to their diet structure and often take some irritating foods. Long-term use will cause recurrence of symptoms. Therefore, the prevention of infectious diseases should start with the patient's diet.

2. Poor living environment.

Some patients, due to their economic conditions, often live in a humid environment, which will cause recurrence of symptoms in the long run. Therefore, patients should pay attention to their living environment and try to keep it clean, tidy, and ventilated.

3. Allergic constitution.

Many patients are born with poor physical fitness and are easily infected with various diseases, the most common of which is urticaria. Therefore, patients should participate in more outdoor activities in their spare time to improve their physical fitness.

3. High-risk groups for subacute urticaria

1. People with poor dietary structure are prone to urticaria. Because of the poor diet of this group of people will stimulate the occurrence of urticaria, especially peppers, onions, garlic and other irritating foods. The pigments, spices, additives and their derivatives in fast food can also cause urticaria.

2. People with infectious symptoms are also prone to urticaria. Because various infectious factors can cause urticaria, infection is also a major cause of urticaria.

3. People with highly sensitive constitutions are also prone to urticaria. Urticaria can also be caused by skin allergies. For example, pollen, dust, insect bites, animal dander, smoke, feathers, fungal spores, and cosmetics in daily life are all allergens that cause urticaria.