Der Schmerz
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Review
[Efficacy, tolerability, and safety of cannabinoids in gastroenterology : A systematic review].
The medical use of cannabis is discussed in gastroenterology for inflammatory bowel diseases (IBD), irritable bowel syndrome (IBS), and chronic pancreatitis. ⋯ Cannabis may be useful for symptom relief in Crohn's disease such as pain, nausea, and loss of appetite. However, studies with high methodological quality, sufficient sample size, and study duration are mandatory to determine potential therapeutic effects and risks of cannabis in gastroenterology. Currently, use of tetrahydrocannabinol to alleviate symptoms such as pain and appetite loss in Crohn's disease should only be considered in individual patients after failure of established medical therapies and only after careful risk-benefit assessment.
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There is growing public and legislative body support for the medical use of cannabis products, for example, for chemotherapy-induced nausea and vomiting (CINV), in Germany. ⋯ With safe and effective antiemetics available, CBs cannot be recommended as first- or second-line therapy for CINV. Some guidelines recommend pharmaceutical CBs as third-line treatment in the management of breakthrough nausea and vomiting. Due to the lack of RCT data and safety concerns, herbal cannabis cannot be recommended for CINV.
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Neuropathic pain is the result of a lesion or disease of the somatosensory system in the peripheral or central nervous system. Classical trigeminal neuralgia and posttraumatic trigeminal neuropathy are pain disorders which oral and maxillofacial surgeons and dentists are confronted with in the differential diagnostics in routine daily practice. The etiopathogenesis of classical trigeminal neuralgia is attributable to pathological blood vessel-nerve contact in the trigeminal nerve root entry zone to the brain stem. ⋯ The neuropathic mechanism of posttraumatic trigeminal neuropathy originates from nerve damage, which leads to peripheral and central sensitization with lowering of the pain threshold and multiple somatosensory disorders. The prophylaxis consists of avoidance of excessive acute and long-lasting pain stimuli. Against the background of the biopsychosocial pain model, the treatment of posttraumatic trigeminal neuropathy necessitates a multimodal, interdisciplinary concept.
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The German government intends to reduce the barriers for the medical use of cannabis products. A discussion on the indications and contraindications of the medical use of cannabis and on the changes of the regulatory framework has already begun in Germany. It is useful to draw from the experiences of other countries with a more liberal medical use of cannabis. ⋯ The use of standardized, synthetic, and plant-based cannabis products should be allowed in Germany for defined medical conditions when high-level evidence of efficacy and safety exists. The costs should be reimbursed by the health insurance companies. Contraindications for the medical use of cannabis should be defined. Growing marijuana by patients for their medical use should not be allowed.