What causes small red spots to appear on the body?
Sep 22, 2024
Source: Cainiu Health
Dr. Liu Wenmin
Introduction
Urticaria is usually caused by allergies, in which various allergens lead to dilation of small blood vessels in the skin and mucous membranes. During an episode, the superficial layer of the dermis may be affected, potentially causing reactive dilation of small blood vessels and increased permeability, resulting in small red spots on the body. It is typically accompanied by symptoms such as itching and pain. Medications such as loratadine tablets or olopatadine hydrochloride tablets may be used under the guidance of a physician.
Small red spots on the body are usually caused by conditions such as capillary dilation, pressure purpura, rubella, urticaria, or systemic lupus erythematosus. It is recommended to seek medical attention promptly, identify the underlying cause, and receive appropriate symptomatic treatment under the guidance of a qualified physician. Specific analyses are as follows:
1. Capillary Dilation
In certain cases, the body's natural response may lead to capillary dilation, which appears on the skin as small red spots. Keeping the body warm, avoiding extreme temperature changes, and minimizing rapid cooling after intense physical activity can help reduce capillary dilation.
2. Pressure Purpura
Minor blood vessels beneath the skin may rupture under prolonged pressure, causing blood to leak into surrounding tissues and form small red spots or bruises. Avoid maintaining the same posture for extended periods, change positions regularly, and use pressure-relieving pads or cushions to reduce localized pressure.
3. Rubella
Rubella is typically caused by a viral infection. When viruses invade the body, they trigger an inflammatory response from the immune system, potentially leading to red spots or rashes on the skin. Symptoms may also include fever, headache, and muscle pain. It is recommended to take medications such as acetaminophen tablets, ribavirin tablets, or famciclovir tablets under a doctor’s guidance.
4. Urticaria (Hives)
Urticaria is usually caused by allergic reactions. Various allergens can induce dilation of small blood vessels in the skin and mucous membranes. During an outbreak, the superficial layer of the dermis may be affected, resulting in reactive dilation of small blood vessels and increased permeability, thereby causing small red spots on the body. These are often accompanied by symptoms such as itching or pain. Medications such as loratadine tablets, olopatadine hydrochloride tablets, or mizolastine sustained-release tablets may be used under medical supervision.
5. Systemic Lupus Erythematosus (SLE)
Systemic lupus erythematosus occurs when the immune system mistakenly attacks the body's own tissues. When the immune system erroneously targets the skin, it can cause inflammation and redness. Common accompanying symptoms include fatigue, joint pain, photosensitivity, and oral ulcers. It is recommended to follow a physician's instructions when using medications such as methotrexate tablets, prednisone acetate tablets, or enteric-coated aspirin tablets.
Maintaining a balanced diet and engaging in moderate exercise, such as running or swimming, can effectively enhance immunity and reduce the occurrence of small red spots on the body.
