Pain- 32 Flashcards
Pain
is an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage
Pain is
“whatever the person says it is, and existing whenever the person says it does”
Cutaneous or superficial pain
arises in the skin or the subcutaneous tissue (e.g., a burn or an abrasion). Although the injury is superficial, it may cause significant short-term pain.
Deep somatic pain
originates in the ligaments, tendons, nerves, blood vessels, and bones. Deep somatic pain is more diffuse than cutaneous pain and tends to last longer.
Visceral pain
is caused by the stimulation of deep internal pain receptors, most often in the abdominal cavity, cranium, or thorax.
Radiating pain
starts at the origin but extends to other locations. For instance, the pain of a severe sore throat may extend to the ears and head.
Referred pain
occurs in an area that is distant from the original site.
Phantom pain
is pain that is perceived to originate from an area that has been surgically removed.
Psychogenic pain
refers to pain that is believed to arise from the mind. The patient perceives the pain despite the fact that no physical cause can be identified.
Nociceptive Pain
is the most common type of pain. It occurs when pain receptors, which are called nociceptors, respond to stimuli that are potentially damaging
Neuropathic Pain
is complex and often chronic pain that arises when injury to one or more nerves results in repeated transmission of pain signals even in the absence of painful stimuli.
Acute pain
has a short duration with rapid onset. It varies in intensity and may last up to 6 months
Chronic (or persistent) pain
lasts 3 to 6 months or longer and often interferes with daily activities.
intractable pain
is both chronic and highly resistant to relief. This type of pain is especially frustrating for the patient and care provider.
Pain quality
may be described as sharp or dull, aching, throbbing, stabbing, burning, ripping, searing, or tingling.
Pain periodicity
may be referred to as episodic, intermittent, or constant.
Pain intensity
is described with a variety of terms, such as mild, distracting, moderate, severe, or intolerable.
transduction
nociceptors become activated by the perception of mechanical, thermal, and chemical stimuli.
Mechanical stimuli
are external forces that result in pressure or friction against the body. They involve stretching of body tissues
Thermal stimuli
result from exposure to extreme heat or cold.
Chemical stimuli
stimuli can be internal or external.
transmission
Peripheral nerves carry the pain message to the dorsal horn of the spinal cord
A-delta fibers
These fibers transmit fast pain impulses from acute, focused mechanical and thermal stimuli.