Demodex examination is a dermatological examination method that checks the skin for Demodex mites that cause Demodex skin disease. Human Demodex is commonly found in both hair follicles and Demodex, mainly in the hair follicles and sebaceous glands.

Basic Information

Specialist classification: skin examination classification: pathogenic microbiological examination

Applicable gender: whether men and women apply fasting: not fasting

Analysis results:

Below normal:

Normal value:
no

Above normal:

negative:
The skin is in a healthy state.

Positive:
Positive indicates that there is a tapeworm infection in the skin.

Tips: Keep the skin in good condition before the test, and do not eat foods that are very irritating to the skin. Normal value

The skin is in a healthy state.

Clinical significance

Abnormal results: skin lesions are similar to seborrheic dermatitis, hyperpigmentation, subjective itch. The skin lesions of sebum sputum are mainly nasal, causing rosy erythema and papules on the tip of the nose and nose. The telangiectasia is obvious. In severe cases, due to tissue hyperplasia, nodules can be formed in the nose, and the nose can be hypertrophied. Malformation, formation of nasal discharge, accompanied by dry nasal mucosa, poor breathing and other symptoms.

People who need to be examined: rosacea, acne, blepharitis, itching of the external auditory canal, papillitis, genital itching and other symptoms.

Positive results may be diseases: human Demodex disease, rosacea precautions

Inappropriate people: people with skin scratches, and people with normal skin conditions.

Contraindications before examination: Maintain good skin hygiene and do not eat foods that are irritating to the skin.

Requirements for inspection: Actively cooperate with the doctor.

Inspection process

1. Squeezing method: select the skin lesions such as the nasal groove, cheek and ankle, squeeze with a scraper or hand, place the extrudate on the slide, drop a drop of normal saline, cover the cover slip and gently flatten it. , microscopic examination for the presence of Demodex.

2. Scotch tape method: Apply the scotch tape to the above parts. After several hours or overnight, remove the tape and attach it to the slide for microscopic examination.

Not suitable for the crowd

Contrained people: people with skin scratches and people with normal skin conditions.

Adverse reactions and risks

Generally no complications and harm.