Acute Pain - Rapid onset, varying intensity, usually indicates tissue damage and resolves with the healing of the injury., Chronic Pain - Pain that continues past the expected point of healing for injured tissue. Provides no protective function. May be continuous or intermittent. Often interferes with sleep and ADLs., Nociceptive Pain - Pain due to noxious stimuli that damages normal tissues or has the potential to do so if pain is prolonged. Can be described as sharp, burning, dull, aching, cramping, deep aching, or sharp stabbing, Neuropathic Pain - Pain due to malfunctioning of the peripheral or central nervous system. May be continuous or intermittent, often described as burning, tingling, shooting, squeezing, or spasm-like., Nociceptive Pain Examples - chemical burns, sunburn, cuts, appendicitis, and bladder distention, Neuropathic Pain Examples - post traumatic and post-surgical peripheral nerve injuries, pain after spinal cord injury, metabolic neuropathies, phantom limb pain after amputation, and post-stroke pain, Somatic Pain - Refers to pain that develops in the tissues. Can be superficial or deep, Superficial Somatic Pain - Often called cutaneous pain, involves the stimulation of nociceptors in the skin, subcutaneous tissue, or mucous membranes. Typically is well localized and described as sharp, pricking, or burning sensations. Often tenderness is present, Superficial Pain Examples - External Mechanical, chemical, or thermal injuries, or skin disorders., Deep Somatic Pain - Typically involves the muscles, tendons, joints, fasciae, and bones. Can be localized or diffuse, and is usually described as a dull, aching, or cramping. Tenderness and reflex spasm may be present. They also may exhibit SNS activation such as tachycardia, hypertension, tachypnea, diaphoresis, pallor, and pupillary dilation, Deep Somatic Pain Examples - Strain from overuse, or direct injury, ischemia, and inflammation., Visceral Pain - Pain that develops within organs such as the heart, lungs, GI tract, pancreas, liver, gallbladder, kidneys, or bladder. Often produced by a disease. Usually diffuse and poorly localized, and is described as deep ache or sharp stabbing sensation that may be referred to other areas. Tenderness, nausea, vomiting, and diaphoresis may be present, Visceral Pain Examples - Detention of an organ, organ muscular spasm, contraction, pulling, ischemia, or inflammation., Factors Affecting Pain  - Age, Gender, Cognitive Level, Temperament, Previous Pain Experiences, and Family/Cultural Backgrounds.,

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