Understanding Scabies and Its Treatment
Scabies is a highly contagious skin infestation caused by a tiny mite called Sarcoptes scabiei. These mites burrow into the skin and lay eggs, causing intense itching and a rash. Treatment typically involves prescription-strength scabicidal creams or lotions. While applying these medications correctly is crucial for eradicating the mites, knowing where not to apply them is equally important for safety and effectiveness. This article will guide you through the areas to avoid when using scabies cream.
General Application Principles
Before delving into specific areas to avoid, it's vital to understand the general principles of scabies cream application. Most scabicides are designed to be applied to the entire body, from the neck down, and left on for a prescribed duration (usually 8-14 hours) before being washed off. This comprehensive coverage is necessary because the mites can be present in areas that aren't obviously itchy or visible.
Areas to Generally Avoid
While scabies cream needs to be applied broadly, there are a few specific areas where caution is advised, or application might be explicitly excluded by your doctor or the product instructions. Always follow the specific instructions provided with your prescription or by your healthcare provider.
- Around the Eyes, Mouth, and Nose: These mucous membranes and sensitive areas are generally not sites where scabies mites burrow. Applying medication directly into or very close to the eyes, mouth, or nostrils can lead to irritation, burning, or accidental ingestion/inhalation, which can be harmful. If accidental contact occurs, rinse thoroughly with water.
- Open Wounds or Broken Skin: While scabies causes irritation and sometimes scratching that can lead to breaks in the skin, applying medicated cream directly onto large, open wounds might not be recommended. This is because the medication could be absorbed more readily, potentially leading to increased side effects. It's best to apply the cream to intact skin surrounding these areas and consult your doctor if you have significant open sores.
- Genital and Anal Areas (with caution): While the genital and anal areas are common sites for scabies infestation and *should* be treated, application here requires careful attention. The skin in these areas can be more sensitive. Apply the cream thoroughly to these regions as directed, but avoid getting it inside the vagina, anus, or on the penis head unless specifically instructed by your doctor. Ensure thorough washing off after the treatment period.
Specific Instructions for Different Scabicides
It's important to note that different scabicidal medications may have slightly different application instructions. Always read the patient information leaflet that comes with your medication and follow your doctor's advice. Two common types of scabicides are:
- Permethrin Cream (e.g., Elimite): This is the most commonly prescribed scabicide. For permethrin, instructions typically state to apply to all areas from the neck down, including between the fingers and toes, under fingernails, and in skin folds. However, it explicitly advises against applying it to the face, scalp, mucous membranes (eyes, mouth, nose), and open wounds unless your doctor specifically tells you to.
- Ivermectin (Oral medication): While not a cream, it's worth mentioning that ivermectin is taken orally and works systemically. Therefore, the question of "where not to put" doesn't apply to topical application.
Why These Precautions Are Necessary
The reasons for avoiding certain areas are primarily:
- Safety: Sensitive mucous membranes can be easily irritated or damaged by topical medications. Accidental ingestion or inhalation can also occur.
- Effectiveness: Scabies mites typically burrow in specific areas of the skin. While comprehensive body coverage is key, applying medication to areas where mites are not found or where it can cause harm is unnecessary and potentially detrimental.
- Reduced Side Effects: Applying medication to broken skin or highly sensitive areas can increase the risk of adverse reactions like burning, stinging, or increased absorption.
Always consult your doctor or pharmacist if you are unsure about any aspect of applying your scabies cream. They can provide personalized guidance based on your specific situation and the medication prescribed.
What If I Accidentally Apply Cream to an Area I Shouldn't?
If you accidentally apply scabies cream to your eyes, mouth, or nose, rinse the area immediately and thoroughly with clean water. If irritation persists or you experience significant discomfort, seek medical attention. For accidental application to open wounds, observe the area for any signs of unusual irritation or reaction, and contact your doctor if concerned.
Frequently Asked Questions (FAQ)
Q: How much scabies cream should I use?
A: You should use enough cream to cover your entire body from the neck down, including all skin folds and areas between your fingers and toes. The exact amount will depend on your body size, but it should be a thin, even layer.
Q: Why do I need to apply scabies cream to my whole body?
A: Scabies mites are microscopic and can burrow into the skin in areas that may not appear to be affected. Applying the cream to your entire body ensures that you kill all the mites and their eggs, preventing re-infestation.
Q: Can I use scabies cream on my face or scalp?
A: Generally, no. Most scabicides, like permethrin cream, specifically advise against application to the face and scalp unless your doctor explicitly instructs you to do so. These areas are usually not infested with scabies mites and are more sensitive to the medication.
Q: What should I do if the scabies cream gets into my eyes?
A: If scabies cream accidentally gets into your eyes, rinse your eyes immediately and thoroughly with plenty of clean water. If irritation persists or you experience any discomfort, seek medical attention from your doctor or an eye specialist.
