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Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin01:26

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin

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Directly acting muscle relaxants like dantrolene and botulinum toxin (BoNT) have distinct mechanisms and applications. Dantrolene, a hydantoin derivative, acts on the ryanodine receptor (RYR1) in skeletal muscle cells. RYR1 are calcium channels present at the sarcoplasmic reticulum membrane. In response to excitation, they release calcium ions from the sarcoplasmic reticulum to the cytosol. Calcium promotes actin-myosin-mediated contraction of muscles.
The binding of dantrolene to the RYR1...
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Local Anesthetics: Adverse Effects01:12

Local Anesthetics: Adverse Effects

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While local anesthetics are generally safe and well-tolerated, they can occasionally cause adverse effects that vary in severity. Local anesthetics can induce toxicity at two distinct levels. They can either produce local effects through direct contact with the neural elements or be absorbed into the bloodstream from the injection site, leading to systemic effects.
Once absorbed into the systemic circulation, local anesthetics can affect the organs that depend on the functioning of sodium...
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Local Anesthetics: Clinical Application as Spinal Anesthesia01:11

Local Anesthetics: Clinical Application as Spinal Anesthesia

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Spinal anesthetics are given during lower abdomen and limb surgeries to block sensory and motor neurons. They are administered in the mid to low lumbar regions, primarily acting on the cauda equina's nerve roots. The blockade level depends on the local anesthetic (LA) concentration. Usually, low LA concentrations are sufficient to block sensory fibers, while only high LA concentrations block motor fibers. Other factors like injection volume and speed, the patient's posture, and the drug...
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化粧品の実践におけるボトゥリヌス後頭痛:展望的研究

Ümit Akpınar1, Omer Vural2, Ekrem Civas1

  • 1Private Dermatology Practice, Ankara, Türkiye.

Journal of cosmetic dermatology
|February 19, 2026
PubMed
まとめ

ボツリヌス後頭痛は,患者の12.7%に影響を及ぼす希少な副作用であり,主に上部顔面注射を受けた初回ユーザーである. この頭痛は通常,軽度で短命で,それ自体に治る.

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科学分野:

  • 神経学 神経学とは
  • 皮膚科 皮膚科について
  • エステティック医学とは

背景:

  • ボトリヌム毒素の注射は,美容および機能的な用途で一般的であり,一般的に安全と考えられています.
  • 頭痛は,特に化粧品の用途において,ボツリヌム毒素による処置の後,知られているが,十分に研究されていない有害効果です.

研究 の 目的:

  • ボトリヌム毒素注射後の頭痛の発生率と特徴を決定する.
  • 異なる解剖学的領域における注射後の頭痛の潜在的な危険因子を特定するために.

主な方法:

  • 展望的観察研究では,102人の成人患者が,顔面,マセター,または帯の領域にアボトリヌムトキシンAの注射を受けた.
  • 頭痛の発生は,電話および1ヶ月以内にフォローアップ訪問を通じて監視されました.
  • 収集されたデータには,患者の人口統計,以前のボツリヌム毒素使用,注射痛,毒素用量,および頭痛の詳細が含まれています.

主要な成果:

  • ボツリヌス発症後の頭痛は,患者の12.7%で発生し,軽度から中等度までであり,一時的であった.
  • 頭痛は,以前に治療を受けた人 (8.8%) と比較して,初めてボツリヌム毒素を使用した人 (45.5%) で顕著に増加しました.
  • 頭痛は,上部顔面注射後にのみ観察されましたが,マセーターまたは頭治療のみで頭痛は発生しませんでした.

結論:

  • ボトリヌム毒素による頭痛はまれで,良性であり,一時的なものです.
  • 顔の上部に注射される初回患者は最も敏感です.
  • 発見は,潜在的な副作用に関する患者カウンセリングと期待管理の臨床医を支援します.