Skin rash
Skin is the first line of defense of the human body, acting as a barrier against the external environment. Skin rash is a disorder that occurs in a particular area of the skin due to changes that cause it to irritate or swell. Skin rash may include ulcers, blemishes, or scabs, or may be redness only, itching or burning, and may also include skin discoloration or cracks. Skin rash may be the result of many pathological conditions. The diagnosis of the underlying cause of the rash depends on several factors, such as the appearance, location, color, and full information about the patient, including the symptoms, the family history of such a rash, and the conditions that the patient has experienced recently. Some types of rash appear shortly after exposure to the cause, and some may take a long time for treatment.
Causes of rashes
Skin rash can be caused by too many causes. Allergy may result in all kinds of allergies, as a result of taking many medications, or using cosmetics, or it may be a symptom of many diseases. The most important and most common reasons are:
- Contact dermatitis : It is one of the most common causes of skin rash, and results from the contact with the skin of a substance that causes either redness of the skin, irritation, or itching, or all combined. These include cosmetics, soap, detergents or clothing dyes, and may also arise when exposed to other chemicals such as rubber or plastic. Some toxic plant species may also cause contact with this type of dermatitis. Skin rash may be delayed until 2 days after exposure to the irritant.
- Atopic dermatitis : It is a chronic condition that results in dryness of the skin, irritation and irritation, as well as redness of the affected area, and may be skin in a cortical nature and needs to be cared for daily. It often affects patients with asthma or allergies. There are usually other infections of this type in the same family.
- Psoriasis , Which is a case of a common immune disease, arising from the wrong signals sent by the skin to form new cells, these cells accumulate on the skin, and therefore shows skin rash in the form of red scales, itching sometimes, and may develop when the proliferation of cells in the affected area becomes the color of the rash white Gray. Rash often occurs on the elbows or knees, and may also appear in other areas such as the scalp, the soles of the hands or the feet, or the genital areas. Unlike eczema, the psoriasis skin rash is prominent on the external sides of the joints.
- Dermatitis : This type of inflammation is targeted areas rich in fatty glands in the skin as the head and face, and may also affect other areas such as ears, or mouth, or nose, or trunk. And usually causes the so-called dandruff, and may result in the redness of the affected area and irritate it. Dermatitis is affected by several factors, such as illness, stress, general fatigue, or climate change.
- Lupus erythematosus : An autoimmune disease in which the immune system attacks the body’s own cells, and may, in addition to many other symptoms, the emergence of a rash on the cheeks and nose.
- Smallpox : It is a highly contagious disease caused by infection of the varicella virus, and is characterized by the emergence of red blisters, itchy start on the face and trunk, which spreads until it spreads on the whole body.
- Measles : This rash is caused by a respiratory infection that causes the appearance of red, itchy maceration on the entire body.
- Scarlet fever : An inflammation caused by the infection of Streptococcus Streptococcus A group, as these bacteria produce toxins causing irritation of the skin, showing a skin rash with a bright red color similar to the paper glass.
- Hand, mouth and foot disease : A highly contagious disease caused by a virus from the family of internal viruses, the most common virus Koksaki, and is characterized by the occurrence of ulcers or blisters in the mouth, in addition to a rash on the hands and feet.
- Kawasaki disease : Although it is considered a rare disease, it is very serious, as it may cause problems in the coronary arteries that feed the heart as one of its complications. It causes the appearance of a rash associated with high body temperature.
- Inflammation of hair follicles : This inflammation causes the appearance of pores and pimples red and small in size, and may be painful in different areas of the body.
- Scabies : A disease caused by the infection of fungal infection caused by the appearance of red blisters, which itchy greatly.
- Other less common causes of rashes , Such as skin streptococcal disease caused by bacterial infection, as well as the infection of a virus resulting in the so-called disease V, which is accompanied by the emergence of rash on the cheeks and arms and legs, and there is also pink palate, vitiligo, and hypersensitivity of light.
Cases where you should see your doctor
When a rash occurs, you should go to the doctor to determine the underlying cause of the rash. If you have other symptoms, you should see your doctor directly.
- Increased pain and discoloration in the affected area.
- If the patient feels itching or squeezing in the throat.
- If accompanied by a temperature rise of more than 38 °.
- If the patient is short of breath or dizzy.
- If there is swelling in the face or limbs.
- The patient felt severe pain in the head or neck.
- If the patient suffers from frequent vomiting or diarrhea.