Post Date November, 17 2024
People should pay attention to understanding the emergence of sexually transmitted diseases in their daily lives. The harm of pubic lice is great, and people should pay attention to understanding the treatment methods. People should pay attention to the inspection items in their daily lives. So, what are the common methods for checking pubic lice? Below is an introduction to common methods for checking pubic lice.
Generally speaking, common methods for detecting pubic lice include:
Patients can self test, and this disease has three characteristics: itching, redness, and bruises. Generally, there is no need for laboratory examination. If necessary, adult pubic lice or insect eggs can be detected under a microscope or magnifying glass for further identification.
Specimen collection: Use scissors to cut off the pubic hair of pubic lice and insect eggs
Fixation of pubic lice specimens: Select the following fixative solution for fixation: 70% alcohol or 5% -10% formalin solution. Place the fixed specimen on a glass slide, drop a drop of 10% potassium hydroxide solution, heat slightly on an alcohol lamp, and observe under a microscope. This is an important method for checking for pubic lice.
Check for the phenomenon of pubic lice: The pubic lice are crab shaped and have three pairs of feet, with smaller front feet and larger middle and back feet. They have thick claws that can grip the pubic hair. The egg is rust colored or light red. Due to its small range of activity, pubic lice often cling tightly to the skin or firmly adhere to the pubic hair without moving, causing severe itching when bitten. Upon scratching, they can cause epidermal erosion, scratches, scabbing, folliculitis, and secondary damage. Some patients may develop blue spots, with a diameter of about 0.5cm, which are grayish blue in color, non itchy, and do not fade under finger pressure. They are common on the inner thigh and abdomen, and may be due to the saliva of the pubic lice entering the skin during blood feeding, causing the hemoglobin here to change color into blue spots, which can last for several months.
The pubic lice need to identify the following diseases:
(1) Scabies infection: Scabies is a highly contagious parasite that cannot be seen with the naked eye and is classified as a sexually transmitted disease. For example, items that patients come into contact with may be infected, and scabies tend to be nocturnal, with noticeable itching at night.
(2) Trichomonas infection: Trichomonas are very small flagellated protozoan organisms that cannot be seen with the naked eye. It must be observed under a microscope. Usually it is a sexual contact infection. It only occurs in the genitourinary system, mainly in the vagina, urethra, and prostate. Most of the men infected with Trichomonas vaginalis have no symptoms, but most of the women have symptoms, which are manifested as chartreuse secretion with vaginal odor and vulva irritation.
