Category: P

Lemon-yellow crystals used as a dye and furniture stain, in manufacture of batteries, in photography, and in laboratories to preserve tissue.  

A white crystalline powder used in pharmaceutical and chemical preparations.  

Aluminum potassium sulfate; strongly astringent, used topically as a styptic.  

In dilatation of the aorta, dullness on percussion over the area extending from the body of the sternum toward the third costal cartilage on the right, and to the base of the sternum.  

Urine that remains in the bladder after urination; e.g., in prostate hypertrophy.  

Chronic disability following a presumed viral infection. The most characteristic and persistent feature of the disease is muscle fatigue unrelieved by rest. Other symptoms include low-grade fever, headache, blurred vision or diplopia, stiff neck, vertigo, nausea and vomiting, lymphadenopathy, emotional lability, insomnia, urinary frequency, and either deafness or hyperacusis. In addition depression, anxiety, or other…

Following vaccination; used especially with reference to safety issues or immune responses that result from immunization  

Inability to tolerate a standing position as a result of a sudden increase in heart rate when rising from a seated or recumbent position. It is thought to be one of the dysautonomic syndromes.  

An involuntary neurological loop consisting of motor, sensory, and integrative processes used to maintain the body’s position relative to gravity and of its segments relative to each other for stability. Postural control relies on information from the vestibular and somatosensory systems and visual cues. Balance is a hallmark of postural control.  

Intense psychological distress, marked by horrifying memories, recurring fears, and feelings of helplessness that develop after a psychologically traumatic event, such as the experience of combat, criminal assault, life-threatening accidents, natural disasters, or rape. The symptoms of PTSD may include re-experiencing the traumatic event (a phenomenon called “flashback”); avoiding stimuli associated with the trauma; memory…