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Localized or generalized pruritus without a primary skin lesion; Chronic pruritus, characterized as being greater than 6 weeks; There is no somatic cause present; 7 Optional criteria (need 3 to diagnose) A chronological relationship of pruritus with one or several life events that can have psychological consequences; Changes during the nighttime
The word "prurigo" comes from the Latin word pruire, which meaning itching. Ferdinand von Hebra coined the term "prurigo" in Vienna in 1850 to describe papules and nodules that had severe pruritus. [2] Some authors categorize prurigo based on its nature (acute, subacute, or chronic), clinical manifestation, underlying cause, or related illness. [3]
As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic reaction, when in fact it is the act of being scratched that causes a wheal to appear. These wheals are a subset of urticaria (hives), and appear within minutes, in some cases accompanied by itching. The first outbreak of ...
Although the exact cause of PN is unknown, PN is associated with other dermatologic conditions such as untreated or severe atopic dermatitis and systemic causes of pruritus including liver disease and end stage kidney disease. [2] The goal of treatment in PN is to decrease itching. PN is also known as Hyde prurigo nodularis, or Picker's nodules ...
Itching after contact with water, without the development of physical hives, is known as aquagenic pruritus. Aquadynia is a condition in which pain occurs after contact with water. [2] In severe cases, drinking water can result in swelling of the oral cavity, [3] swelling of the throat, [4] and in extreme cases, anaphylaxis. [5] [6] [7]
According to a study, most of the people who experience pruritus daily have increased itching sensations and other associated symptoms during the night. Most studies reveal that senile pruritus is more common in men than women. [3] Common symptoms of senile pruritus include: [3] pain; heat sensation; cold sensation; bumps, blisters or spots ...
No definitive medical test is known for aquagenic pruritus. Rather, diagnosis is made by excluding all other possible causes of the patient's itching, including polycythemia vera . Since pruritus is a symptom of many serious diseases, it is important to rule out other causes before making a final diagnosis.
A thermoregulatory sweat test evaluates the body's response to a thermal stimulus by inducing sweating through the use of a hot box ⁄ room, thermal blanket or exercise. Failure of the topical indicator to undergo a colour change during thermoregulatory sweat testing can indicate anhidrosis and/or hypohidrosis (see Minor test ).