Clinical symptoms of pruritus

Written by Zhu Zhu
Dermatology
Updated on September 27, 2024
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Pruritus is a common skin disease characterized by a strong itching sensation. Patients may also exhibit various other symptoms such as scabs, eczema, hyperpigmentation, and lichenification of the skin. These are typically clinical signs that emerge from intense itching and frequent scratching. Therefore, it is crucial to seek medical attention and treatment promptly for pruritus. It is also advisable to avoid alcohol and spicy, irritating foods.

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The patient, due to formaldehyde poisoning, has developed skin allergies and itching. It is important to remember not to scratch the affected areas, to promptly leave the environment containing the allergen, and to avoid exposure to sunlight and ultraviolet lamps. If the patient's condition is mild, bathing in salt water can be effective in alleviating the itchiness caused by the allergies. If the itching is more pronounced, oral administration of antihistamines such as cetirizine and loratadine can be used to relieve the symptoms. If the condition is particularly severe, it may be necessary to go to the hospital for infusion therapy. During the infusion, medications that enhance the body's immune system and corticosteroids for symptomatic treatment may be administered. Additionally, during the allergic reaction phase, the patient should avoid using cosmetics and refrain from consuming potentially irritating foods like fish and shrimp, to prevent exacerbating the allergic reaction.

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Skin itching caused by tumors is generally stubborn and persistent, but there are no visible symptoms on the surface of the skin. This is because the biological factors released by tumor cells stimulate the surrounding nerves, leading to itching. For example, malignant lymphomas, cancers of the external genitalia, and cancers in female patients all exhibit itching during their progression. Beyond skin itching, some patients may experience varying degrees of skin damage, including the appearance of erythema, blisters, or erosion. If these areas become infected, they can lead to skin breakdown and exudation. In addition to these symptoms, some patients may also experience skin thickening and scaling, as well as itching of the nose, anus, and genitals. There are many types of tumors that can cause itching, such as tumors on the forehead, rectum, colon, vagina, cervix, prostate, etc. Therefore, if a patient experiences symptoms of skin itching, it is crucial to maintain proper skin cleanliness promptly.

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