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    Pre and post-irradiation behavior

    2 minute(s) read
    Information by
    Bangkok Rayong Cancer Hospital
    Updated on: 17 Dec 2025
    Pre and post-irradiation behavior
    Bangkok Rayong Cancer Hospital
    Updated on: 17 Dec 2025

    Pre-Radiation Behavior

    1. Patients must undergo a thorough physical examination and medical history, including laboratory blood tests, before radiation therapy.
    2. When undergoing radiation therapy, wear clothing that is easy to put on and take off.
    3. Eat a nutritious and nutritious diet.
    4. Drink at least 6-8 glasses of clean water daily.
    5. Avoid alcohol, cigarettes, and betel leaves to maintain a healthy body and prepare for radiation therapy.
    6. Keep your body, mouth, and teeth clean.
    7. If you have a chronic illness or take any medications, you can continue taking them, but please inform your radiation oncologist.
    8. Radiation therapy requires a long, continuous period of 5 days per week. Therefore, you must prepare for your travel and accommodation while undergoing radiation therapy.

    Precautions during and after radiation therapy:

    1. Be careful not to erase lines. If you do, notify the staff immediately upon your next radiation treatment appointment.
    2. Avoid using creams or topical medications on the treated area.
    3. For body cleansing, showering is recommended, but be careful not to scrub or scrub the treated area with soap.
    4. Do not place hot or cold water bottles on the treated area.
    5. Prevent skin irritation in the treated area by avoiding tight clothing. or rough fabrics or use binding devices.
    6. Do not apply powder to the irradiated area, as powder may contain heavy metals. This can cause severe skin reactions.
    7. Avoid shaving hair in the irradiated area, as it may cause sores.

    Side Effects of LINAC Radiation Therapy

    • Skin changes in the irradiated area: After 1-2 weeks, the skin may appear swollen, red, dry, flaky, itchy, and may peel or flake.
    • Fatigue is a common symptom that may occur during radiation therapy, and may be caused by poor appetite or loss of appetite.
    • Low resistance, anemia, and easy bleeding are caused by radiation therapy that suppresses bone marrow function. This is often caused by radiation exposure to areas with high blood cell production, such as the pelvis, ribs, and chest. Monitor for these symptoms by performing a complete blood count (CBC).
    • Local complications include mucositis and diarrhea.
    • Dry mouth is a symptom of radiation exposure to the head, neck, and salivary glands.
    • Gastrointestinal symptoms are a symptom of radiation exposure to the abdomen.
    • Brain symptoms are a symptom of radiation exposure to the head, which may cause brain swelling.
    • Reproductive organ symptoms In cases of pelvic radiation, for example, erectile dysfunction in men may occur, while vaginal strictures and hormonal changes may occur in women.

    LINAC (High-Energy Radiation Therapy)

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