In general, severe hair loss in high school students may be caused by irregular作息 (daily routines), nutritional imbalances, seborrheic dermatitis, alopecia areata, abnormal thyroid function, or other reasons. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve the condition under a doctor's guidance through general treatments, medications, etc. In daily life, avoid frequent hair perming and dyeing, and choose mild hair care products.

In general, kidney atrophy may result from aging-related degeneration of renal tissue, long-term unhealthy lifestyle habits, chronic glomerulonephritis, renal artery stenosis, or urinary tract obstruction. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve the condition through general management, medication, surgical treatment, or other methods under a doctor's guidance.

There is currently no specific drug for allergic rhinitis, but symptoms can be effectively controlled through standardized medication. Commonly used medications include mometasone furoate nasal spray, levocetirizine hydrochloride tablets, budesonide nasal spray, montelukast sodium chewable tablets, and azelastine hydrochloride nasal spray. If in doubt, it is recommended to consult a doctor in advance.

In general, vertical lines between the eyebrows are mainly caused by frequent frowning, aging, dry skin, seborrheic dermatitis, and localized scleroderma. Patients can choose appropriate treatments such as lifestyle adjustments, medication, or surgical intervention based on their specific conditions. In daily life, it is important to reduce unfavorable facial habits, avoid frequent frowning, and maintain proper skin hydration and sun protection to preserve the skin barrier.

Long-term cycling has multiple effects on physical health. Benefits generally include improved cardiovascular and pulmonary function, strengthened lower limb muscles, enhanced metabolic function, protection of joint health, and regulation of mental well-being. Potential drawbacks may include knee joint injury, adverse effects on lumbar spine health, perineal compression, hand numbness, and neck discomfort. If you have any concerns, it is recommended to consult a healthcare professional in advance.

After being bitten by a rat and bleeding occurs, proper first aid should be administered immediately. General measures include squeezing the wound to expel blood, rinsing with running clean water, disinfecting the wound with iodine tincture, covering it with sterile dressing, and seeking prompt medical attention for vaccine administration. After wound treatment, monitor the healing process daily. If symptoms such as redness, swelling, increased pain, pus discharge, or fever occur, seek medical care immediately.

In general, fallopian tube patency with impaired function may be caused by congenital narrow development of the fallopian tubes, residual adhesions after surgery, chronic salpingitis, endometriosis, or pelvic adhesions. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve the condition under a doctor's guidance through conservative management, medication, surgical treatment, or other appropriate methods.

In general, commonly used oral medications for treating low back pain include ibuprofen sustained-release capsules, celecoxib capsules, eperisone hydrochloride tablets, mecobalamin tablets, and Yaotongning capsules. Patients may choose appropriate medications according to the cause and symptoms of their back pain under medical guidance. It is important to avoid prolonged sitting or standing, prevent excessive strain on the lower back, and perform appropriate exercises to strengthen the back and core muscles.

Common methods for sperm collection in artificial insemination include masturbation, condom collection, electroejaculation, testicular sperm aspiration (TESA), and epididymal sperm aspiration (PESA). Men typically ejaculate semen into a sterile container through masturbation in a sterile semen collection room. They should thoroughly wash their hands and external genitalia beforehand and avoid using lubricants. This method is simple to perform, imposes minimal psychological stress, and ensures the freshness of the semen sample.

In general, the regulation and treatment of "gong han" (cold uterus) mainly include lifestyle adjustments, dietary modifications, medication, traditional Chinese medicine therapies, and moxibustion treatment. In addition, it is important to maintain emotional stability during the treatment period and avoid prolonged anxiety or depression. Regularly monitor bodily responses, and if symptoms do not improve or worsen, seek medical advice promptly to adjust the treatment plan and ensure effectiveness.