If you suspect you have an allergy to Sarcoptes scabiei, commonly known as scabies, be aware that the reaction you experience is not actually to the mites themselves but to their saliva, eggs, and feces. Recognizing an allergy quite specifically to Sarcoptes scabiei would involve recognizing the common symptoms of a scabies infestation and then confirming it with a doctor’s diagnosis, as these symptoms can mimic other skin issues. Below are the steps to identify a Sarcoptes scabiei allergy.

Detect the Symptoms

Most scabies infections produce symptoms that are quite characteristic:

• Itchiness: This is the predominant symptom. The itch is often severe and usually worse at night.
• Rash: Many people with scabies develop a rash that can take many forms, but often appears as small, red, elevated spots.
• Burrow lines: These are tiny, raised, off-white or grayish-white, irregular lines on the skin surface usually caused by the female scabies mite tunneling beneath the skin. They most often appear in the webbing between fingers, on the inner surface of the wrists, on the elbow or kneecap, around the waistline, or near the nipples or genital area.

Confirm with a Medical Check

If you are experiencing the symptoms above, it's crucial to reach out to a healthcare provider to get a definite diagnosis. The doctor can usually diagnose scabies based on your symptoms, but they might also take a scraping from the affected area to examine under a microscope. The presence of mites, eggs, or scabies feces can confirm a scabies diagnosis.

Note the Reaction Timing

It's also helpful to note the timing of your reaction. People experiencing a first-time infestation might not develop noticeable symptoms until one to two months after initial exposure. However, in cases of re-infestation, symptoms may appear within just a few days, as the immune system reacts faster due to its prior exposure.

Remember that while these steps can guide you in identifying a Sarcoptes scabiei allergy, a confirmed diagnosis should always be obtained from a healthcare professional.