Current pain and headache reports
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Curr Pain Headache Rep · Oct 2009
ReviewPsychological trauma in chronic pain: implications of PTSD for fibromyalgia and headache disorders.
The association of traumatic exposures with posttraumatic stress disorder (PTSD) and other mental health conditions is well known. Patients with chronic pain, particularly headache disorders and fibromyalgia (FM), associated with psychological traumas need a special management strategy. Diagnosis of headache disorders and FM in traumatized patients and collecting the clinical history of a traumatic event or diagnosing PTSD in chronic pain patients is of great importance. Psychotherapy and pharmacotherapeutic options should be started on patients with comorbid PTSD and headache disorders and/or FM.
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Recent studies have clarified the nature of myofascial trigger points (MTrPs). In an MTrP region, multiple hyperirritable loci can be found. The sensory components of the MTrP locus are sensitized nociceptors that are responsible for pain, referred pain, and local twitch responses. ⋯ This MTrP circuit is the connection among spinal sensory (dorsal horn) neurons responsible for the MTrP phenomena. Recent studies suggest that measurement of biochemicals associated with pain and inflammation in the MTrP region, the sonographic study of MTrPs, and the magnetic resonance elastography for taut band image are potential tools for the diagnosis of MTrPs. Many methods have been used to treat myofascial pain, including laser therapy, shockwave therapy, and botulinum toxin type A injection.
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Menstrual-related migraine (MRM) affects the majority of female migraineurs, with menstrual-associated attacks reported to be more disabling, longer lasting, and less responsive to traditional treatments than nonmenstrual attacks. Emerging evidence suggests that minimizing or eliminating monthly declines in estrogen concentration may be effective in preventing MRM. This article gives a practical overview of current hormonal options, both contraceptive and noncontraceptive. Our intent is to help the reader better understand the differences in currently available formulations and how some of these agents may be utilized as hormonal preventives of MRM.
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Fibromyalgia (FM) and migraine are common chronic disorders that predominantly affect women. The prevalence of headache in patients with FM is high (35%-88%), with migraine being the most frequent type. ⋯ We also discuss the participation of hypothalamic and brainstem centers of pain control, the putative role played by neurotransmitters or neuromodulators on central sensitization, and changes in their levels in the cerebrospinal fluid. Understanding their mechanisms will help to establish new treatment strategies for treating these disabling brain disorders.
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Curr Pain Headache Rep · Oct 2009
ReviewBrain manifestation and modulation of pain from myofascial trigger points.
The brain plays a prominent role in the generation and modulation of pain. It contains powerful endogenous pain modulatory systems that can be engaged in a beneficial way by therapeutical intervention. In contrast, pain chronification is associated with maladaptive structural and functional changes that may shift the balance of the modulatory systems. ⋯ Recent neuroimaging data suggest that hyperalgesia from MTrPs is processed in similar regions as hyperalgesia from other pain conditions. However, abnormal hippocampal hypoactivity suggests that dysfunctional stress responses may play an important role in the generation and maintenance of hyperalgesia from MTrPs. Other data suggest that short-term pain relief obtained with intramuscular electrostimulation within an MTrP is partially due to descending pain inhibitory mechanisms.