What are the reactions after receiving a slimming jaw injection?
Nov 26, 2024
Source: Cainiu Health
Dr. Han Xuefeng
Introduction
Botulinum toxin type A for injection achieves its effect by blocking the transmission between nerves and muscles, causing temporary impairment of muscle contraction in the target muscles, such as the masseter and temporalis muscles, thereby reducing their ability to contract normally. Patients may perceive a more defined jawline and a reduction in the width of both sides of the face.
瘦脸针一般指注射用A型肉毒毒素，打完注射用A型肉毒毒素可能会有注射部位肌肉麻痹、咬肌无力与咀嚼困难、暂时性面部表情僵硬、局部红肿与疼痛、过敏反应等反应。具体内容如下：
1. Muscle paralysis at the injection site: Botulinum toxin type A for injection works by blocking the transmission between nerves and muscles, causing temporary contraction disorders in the target muscles, which leads to the inability of the injected muscles, such as the masseter and temporal muscles, to contract normally, thereby achieving the purpose of reducing the size of the masseter muscles. Patients may feel that the jawline becomes more defined and the width of both sides of the face is reduced.
2. Weakness of the masseter muscle and difficulty in chewing: Botulinum toxin type A for injection acts on enlarged masseter muscles, reducing their volume. As botulinum toxin interferes with the normal metabolic process of the neurotransmitter acetylcholine, the function of the masseter muscle weakens, and patients may feel a decrease in the strength of their masseter muscles, especially noticeable during eating. When the dose of the face-shrinking injection is too high or the individual's constitution is sensitive, it may cause excessive relaxation of the masticatory muscles, thus causing symptoms of difficulty in chewing.
3. Temporary facial expression stiffness: Botulinum toxin type A for injection acts on the facial muscles, temporarily causing them to lose their normal contraction ability. Patients may find their smile becomes unnatural, especially more noticeable when speaking or making facial expressions. This is caused by temporarily blocking the release of the neurotransmitter acetylcholine, thereby inhibiting muscle contraction.
4. Local redness, swelling, and pain: After receiving botulinum toxin type A injection, the injection site may experience redness, swelling, and pain, which are normal injection reactions. This pain and swelling will disappear within 24 hours and require no special treatment. However, if the redness and swelling persist for a prolonged period or are accompanied by fever, a mild inflammation might have occurred, and at this time, oral antibiotics may be needed to prevent or treat the infection.
5. Allergic reaction: Botulinum toxin type A for injection itself is a biological preparation, and during the extraction and processing, it may carry corresponding heterologous proteins. If the patient has a sensitive constitution, an allergic reaction may occur. Once an allergic reaction occurs, redness, swelling, heat, and pain will appear at the injection site. If not properly cared for, persistent suppuration and infection may occur. Although allergic reactions are rare, immediate medical treatment must be sought once they occur.
After receiving botulinum toxin type A injection, patients should follow the doctor's advice, pay attention to post-injection care and observation, and seek medical help promptly if any discomfort symptoms occur. At the same time, choosing a reputable hospital and an experienced doctor for the injection can reduce the risk of adverse reactions.
