May also be called: Allergic Purpura, Anaphylactoid Purpura
(HEH-nok SHOON-line PURR-puh-ruh), or HSP, is a condition in which the small arterial
vessels (capillaries) in the skin, kidneys,
and intestinal tract become swollen and leak. It can occur at any age but is usually
seen in children, more often boys than girls.
More to Know
Although no one really knows what causes HSP, doctors do know that it occurs when
the body's immune system doesn't
function as it should. HSP often happens after a bacterial or viral upper respiratory
infection. Other possible triggers include certain medicines, insect
bites, cold weather, and vaccinations.
Signs and symptoms of HSP include a raised, reddish-purple rash, fever, stomach
pain, bloody stools, blood in urine, and joint pain. HSP also can cause mild to severe
kidney problems, so it’s important to see a doctor if you suspect Henoch-Schölein
With bed rest, increased fluid intake, and pain relievers, most people with HSP
will see an improvement in their condition within a month. It is not unusual, however,
to have mild recurrences.
Keep in Mind
Most people will recover fully from Henoch-Schölein purpura with no lingering
effects. People whose kidneys are affected, however, will need to work with their
doctor to prevent serious and even life-threatening complications.
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