Scabies: Symptoms, Treatment, and Scarring Concerns - Dermatology

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Scabies, also known as "scabiosis," is a highly contagious skin condition caused by the infestation of the Sarcoptes scabiei mite. Understanding its symptoms, treatment options, and potential scarring concerns is essential for effective management.


Symptoms of Scabies
The primary symptoms of scabies include:
1. Intense Itching: This is often worse at night and can be quite severe. The itching is a result of the body's allergic reaction to the mites and their waste products.


2. Rash: A rash may develop, characterized by small red bumps, blisters, or sores. These can appear anywhere on the body but are most commonly found in skin folds, between fingers, on the wrists, elbows, armpits, waist, and buttocks.

3. Burrows: You may notice tiny, thread-like burrows in the skin, which are created by the mites as they tunnel into the upper layer of the skin.

4. Secondary Infections: Scratching the affected areas can lead to bacterial infections, resulting in additional symptoms such as pus-filled blisters or crusting.


Treatment Options
If you suspect you have scabies, it is crucial to seek medical advice. The treatment typically involves:
1. Topical Scabicides: Medications such as permethrin cream (often referred to as "Scabicide") are commonly prescribed. You mentioned using "疥寧" (likely referring to a scabicide), which is a good first step. It is usually applied to the entire body from the neck down and left on for a specified period before washing off.

2. Oral Medications: In some cases, oral medications like ivermectin may be prescribed, especially for severe infestations or when topical treatments fail.

3. Symptomatic Relief: Antihistamines or topical corticosteroids may be recommended to alleviate itching and inflammation.

4. Cleaning and Disinfecting: Wash all clothing, bedding, and towels in hot water and dry them on a hot cycle to kill any mites. Items that cannot be washed should be sealed in a plastic bag for at least 72 hours.


Transmission and Contagion
Scabies is primarily spread through prolonged skin-to-skin contact with an infested person. It can also be transmitted through sharing clothing, bedding, or towels. However, casual contact, such as a handshake, is unlikely to spread the infestation.


Scarring Concerns
Regarding your concern about scarring, it is possible for scabies to leave marks on the skin, especially if there has been significant scratching or secondary infections. The "小凸出物" (small raised bumps) you mentioned could be post-inflammatory hyperpigmentation or scarring from the healing process.
1. Post-Inflammatory Hyperpigmentation: This is common after skin conditions that cause inflammation, including scabies. It usually fades over time but can take several months.

2. Scarring: If the skin was severely damaged due to scratching or infection, there might be some scarring. However, with proper treatment and care, most of the skin should heal without permanent marks.


Additional Notes on Acne
Regarding your question about acne (粉刺), it is generally not advisable to squeeze or pop pimples, as this can lead to scarring and secondary infections. Instead, consider using topical treatments containing benzoyl peroxide or salicylic acid, and consult a dermatologist for personalized advice on managing acne.

In summary, if you suspect you have scabies, seek medical treatment promptly, adhere to prescribed treatments, and practice good hygiene to prevent reinfestation. If you have concerns about scarring or other skin issues, a dermatologist can provide further guidance and treatment options.