Pediatric Henoch-Schonlein Purpura Clinical Presentation
- Author: Noah S Scheinfeld, MD, JD, FAAD; Chief Editor: Craig B Langman, MD more...
History
Prais et al studied 267 children (56.7% males) who were hospitalized secondary to Henoch-Schoenlein purpura (HSP); 7 of the children (2.7%) had Henoch-Schoenlein purpura that resulted in hospitalization 2 or more times.[13] No specific risk factor for recurrence was determined. The mean age for the first recurrence in that subgroup was 3 years and 8 months (range, 10 mo to 7.4 y), and the mean age for the second recurrence was 5.03 years (2.2-10 y), with a mean lag time of 13.5 months ± 2.8 months (range, 2-26 mo). The duration of the recurrent clinical symptoms was 9-30 days. Resolution took more than 2 weeks in 72% of patients.
Associated conditions that precede Henoch-Schoenlein purpura include those listed in Causes.
Scrotal involvement is not uncommon in Henoch-Schoenlein purpura and may mimic testicular torsion, which must be excluded. Male patients may have associated inflammation and hemorrhage of the testes, appendix testes, spermatic cord, epididymis, or scrotal wall. True torsion is rare. Ha and Lee reported that neurologic symptoms, localized edema, and high serum C3 levels have a significant relationship with scrotal involvement in male patients with Henoch-Schoenlein purpura.[14]
GI symptoms can accompany the onset of Henoch-Schoenlein purpura or may develop later in the course of disease. Abdominal pain occurs in 35-85% of patients and is the third most common presenting symptom in Henoch-Schoenlein purpura. GI problems usually follow the onset of rash and joint pain. Multiple and recurrent intestinal perforations are an unusual complication of Henoch-Schoenlein purpura. In addition to abdominal pain, GI findings can include the following:
- Nausea
- Vomiting
- Diarrhea with gross or occult blood
- Hematemesis
- Intussusception: This occurs in 2-3% of patients, and the lead point can be a submucosal hematoma.
- Bowel infarction with or without perforation
- Ileal stricture
- Ileus with massive GI bleed
Arthralgias occur in 60-84% of patients with Henoch-Schoenlein purpura and most commonly affect the knees, ankles, and, less frequently, the wrists and fingers. True arthritis does not occur, and joint effusions are rare. Henoch-Schoenlein purpura leaves no permanent joint deformities.
In women, gynecologic symptoms can include painful menstruation.
Henoch-Schoenlein purpura can be accompanied by neurologic manifestations, particularly headaches. Ozkaya et al reported cerebral vasculitis in a child with Henoch-Schoenlein purpura and familial Mediterranean fever.[15]
In rare cases, Henoch-Schoenlein purpura can be associated with seizures, paresis, or coma. Other manifestations include altered mental status, apathy, hyperactivity, irritability, mood lability, somnolence, seizures (partial, complex partial, generalized, status epilepticus), and focal deficits (eg, aphasia, ataxia, chorea, cortical blindness, hemiparesis, paraparesis, quadriparesis).
Polyradiculoneuropathies (eg, brachial plexus neuropathy, Guillain-Barré syndrome) and mononeuropathies (eg, facial nerve, femoral nerve, peroneal nerve, sciatic nerve, ulnar nerve) may also occur.
The liver and gallbladder can be involved in Henoch-Schoenlein purpura. Hepatomegaly, hydrops of the gallbladder, and cholecystitis may ensue. These may contribute to a patient's abdominal pain. Acute appendicitis has been noted in patients with Henoch-Schoenlein purpura.
Skin involvement is usually purpura. Chan et al noted a case of Henoch-Schoenlein purpura presented as painful bullae on both legs.[16]
Acute hemorrhagic edema of infancy (AHEI) usually occurs in infants aged 4-24 months. AHEI often occurs after drug ingestion or infection. The onset of AHEI is dramatic, with acute palpable purpura, ecchymoses, and tender edema of the limbs and face. Fever, if present, remains mild. Infants remain hemodynamically stable. Dermatologic findings are notable for a cockade (medallionlike), rosette-shaped pattern of macular-papular-hemorrhagic lesions on the face, auricles, and extremities. The lesions usually appear in successive crops. The cockades display variable stages of evolution at any given time.
Subcutaneous edema is most common in infants. Urticaria, petechiae, and ear lobe necrosis are additional rare skin manifestations of AHEI. Visceral involvement is rare.
Renal pathology is the most important cause of morbidity and mortality in patients with Henoch-Schoenlein purpura. Renal involvement may precede skin manifestations (1-4% of patients) but is usually evident during the acute phase of the disease. In most cases, the severity of nephritis is not related to the extent of other Henoch-Schoenlein purpura manifestations.
Hematuria, usually microscopic, can be accompanied by mild-to-moderate proteinuria (< 2 g/d). Oliguria, hypertension, and azotemia are rarely present. Nephrotic syndrome (urinary protein excretion >40 mg/m2/h) can also occur. In most cases, histologic examination of the kidneys reveals mesangial proliferation that can be diffuse or focal and segmental. Resolution of the renal involvement is the focus in these patients.
Patients who present with hematuria and persistent proteinuria have an approximate 15% risk of developing renal failure. The risk may increase to 50% in patients with a nephrotic-nephritic syndrome.
Urinary complications include bladder-wall hematoma, calcified ureter, hydronephrosis, and urethritis.
Hemoptysis and hemarthroses can develop in patients who have bleeding abnormalities such as coagulopathy, factor VIII deficiency, vitamin K deficiency, or hypoprothrombinemia. They also probably include factor V Leiden, protein C deficiency, and protein S deficiency, but this has not been documented.
Physical
Purpura of the skin is the most prominent physical finding in Henoch-Schoenlein purpura, but renal, GI, and joint manifestations are commonly present. Other manifestations have also been reported.
Henoch-Schoenlein purpura begins with a symmetrical erythematous macular rash on the lower extremities that quickly evolves into purpura. The rash may initially be confined to malleolar skin but usually extends to the dorsal surface of the legs, the buttocks, and the ulnar side of the arms. Within 12-24 hours, the macules evolve into purpuric lesions that are dusky red and have a diameter of 0.5-2 cm. The lesions may coalesce into larger plaques that resemble ecchymoses. Several cases of Henoch-Schoenlein purpura have been observed after varicella infections.
In children younger than 2 years, the clinical picture may be dominated by edema of the scalp, periorbital area, hands, and feet. This presentation is termed AHEI. The severity of edema is correlated with the severity of the vasculitis and not with the degree of proteinuria. However, the edema has been attributed to the enteric loss of protein.
Overview of renal findings
The most serious complication of Henoch-Schoenlein purpura is renal involvement, which occurs in 50% of older children but is serious in only approximately 10% of patients. In 80% of patients, renal involvement becomes apparent within the first 4 weeks of illness. Overall, 2-5% of patients progress to end-stage renal failure (ESRF). In one series, acute glomerular lesions, including mesangial hypercellularity, endocapillary proliferation, necrosis, cellular crescents, and leukocyte infiltration, were observed in 41%, 12%, 50%, 29%, and 32% of patients, respectively.[17] Only glomerular necrotizing lesions and cellular crescents correlated with the renal survival rate and were associated with clinically significant proteinuria and development of hypertension.
In a prospective study of 223 children with Henoch-Schoenlein purpura, Jauhola et al reported that 46% developed renal manifestations. The authors recommend that children with renal involvement be followed for more than 6 months. In addition, treatment with prednisone did not affect the renal manifestations.[18]
Henoch-Schoenlein purpura and IgA nephropathy
The relationship of Henoch-Schoenlein purpura and IgA nephropathy requires further definition. Whether they are the same or distinct entities remains unclear. Evidence of both their commonality and distinctiveness is presented herein.
The occurrence of extrarenal manifestations in IgA nephropathy is similar to those observed in Henoch-Schoenlein purpura.
IgA nephropathy has developed in patients with a history of Henoch-Schoenlein purpura. Henoch-Schoenlein purpura and IgA nephropathy have occurred in the same families.
In a survey of 40 families in which 2 or more members had IgA nephropathy, 5 presented with Henoch-Schoenlein purpura.[19]
Patients with Henoch-Schoenlein purpura who undergo renal transplantation develop IgA deposits in the graft.
The prevalence of both conditions is high in certain geographic areas.
Similar changes in the IgA system (ie, high IgA, IgA-1C, IgA1-IC, IgA-fibronectin aggregates, aberrantly glycosylated IgA in the circulation) occur in both diseases.[20, 21, 22]
Cystic changes in the ovaries of a prepubertal girl with Henoch-Schonlein purpura has been recorded.
However, data indicate that Henoch-Schoenlein purpura and IgA nephropathy are distinct diseases. Zhou et al examined 31 children aged 3-15 years with IgA nephropathy and 120 children aged 4-15 years with Henoch-Schoenlein purpura, noting their clinical manifestations, blood biochemistries, serum immunology, and follow-up data.[23] Renal pathologic findings on light microscopy, immunofluorescence study, and electron microscopy were analyzed and compared between 31 children with IgA nephropathy and 32 children with Henoch-Schoenlein purpura.
The age of onset was more than 12 years in 25.8% of the children with IgA nephropathy. However, the age of onset was more than 12 years in only 10% of those with Henoch-Schoenlein purpura. Clinical patterns of IgA nephropathy and Henoch-Schoenlein purpura were similar, but extrarenal manifestations were observed most often in patients with Henoch-Schoenlein purpura. All patients with Henoch-Schoenlein purpura had skin purpura, 59% of patients had GI symptoms, and 47% of patients had arthralgia. Abdominal pain occurred in only 3.2% of children with IgA nephropathy. In patients with IgA nephrology and in patients with Henoch-Schoenlein purpura, renal pathology revealed global sclerosis in 35.5% and 3.1%, mesangial sclerosis in 41.9% and 6.3%, endothelial proliferation in 29% and 65.6%, and thin basement-membrane nephropathy in 6.5% and 0%, respectively.
Electronically dense deposits in Henoch-Schoenlein purpura were sparse, loose, and widely spread in the glomerular mesangium, in the subendothelial area, and even in the intrabasement membranes, whereas the deposits were dense, lumpy, and mostly limited in mesangium and paramesangium in IgA nephropathy. Immunoglobulin G (IgG) was found in glomerular immune deposits in 71.9% of patients with Henoch-Schoenlein purpura but in only 19.4% of patients with IgA nephropathy. No IgG deposit was observed in 81.6% of those with IgA nephropathy; most had IgA and immunoglobulin M (IgM) and/or C3 deposit. Predominant IgG deposits were found in 12.5% of patients Henoch-Schoenlein purpura, with relatively weak IgA deposits. Moreover, 6.3% of patients with Henoch-Schoenlein purpura had linear IgG deposits in the glomerular capillary wall, which was not found in IgA nephropathy.
The follow-up data at an average of 20 months showed complete remission in 72.5% of patients with Henoch-Schoenlein purpura; the rate was 19.4% of those with IgA nephropathy after 34 months follow-up. Moreover, 64.5% of patients with IgA nephropathy had consistent hematuria and proteinuria, and 16.1% had active nephritides. Therefore, the difference was significant (P < .05).
Zhou et al found important clinicopathologic differences between Henoch-Schoenlein purpura and IgA nephropathy, which does not support the one-disease hypothesis.
Overview of GI findings
Abdominal pain and bloody diarrhea may precede the typical purpuric rash of Henoch-Schoenlein purpura in 14-36% of patients, complicating the initial diagnosis and even resulting in unnecessary laparotomy. GI manifestations occur in about 50% of cases and usually consist of colicky abdominal pain, melena, or bloody diarrhea. Hematemesis occurs less frequently. Intussusception should be suspected in patients Henoch-Schoenlein purpura with abdominal pain and/or melena. Barium enema is frequently therapeutic.
Overview of joint findings
Arthralgias occur in 60-84% of patients with Henoch-Schoenlein purpura. The pain most commonly affects the knees and ankles and less frequently the wrists and fingers. Frank arthritis does not occur, and joint effusions are rare. Henoch-Schoenlein purpura leaves no permanent joint deformities.
Palpable purpura usually occurs first on the lower limbs and then spreads to the buttocks. Purpura is usually most prominent over the buttocks, the posterior aspects of the lower legs, and the elbows.
Palpable purpura can also be present on the forearms and pinna. Scalp edema can occur. Hemorrhagic vesicles and bullae are rare. In most patients, the skin lesions are the first sign of Henoch-Schoenlein purpura.
Hives, angioedema, and target lesions can also occur. Vesicular eruptions and swelling and tenderness of an entire limb have been noted. Erythema multiforme–like lesions can be present.
Henoch-Schoenlein purpura with hemorrhagic bullae in children has been noted.
In AHEI, dermatologic findings are notable for a cockade (medallionlike), rosette-shaped pattern on the face, auricles, and extremities. The lesions usually appear in successive crops. The cockades display variable stages of evolution at any given time and look different from the normal purpura of Henoch-Schoenlein purpura.
The subcutaneous edema of AHEI is more common in infants. Urticaria, petechiae, and necrosis of the ear lobe are additional, rare skin manifestations of AHEI. AHEI is rarely associated with visceral involvement.
Possible renal manifestations include microscopic hematuria, proteinuria, nephrotic syndrome, progressive glomerulonephritis, ESRF (rarely), and intestinal perforation. The relationship of Henoch-Schoenlein purpura and IgA nephropathy requires further definition. Whether they are the same or distinct entities remains unclear. Evidence of both their commonality and distinctiveness is presented in Overview of renal findings above.
If serial urine samples are obtained in patients with Henoch-Schoenlein purpura, microscopic hematuria is usually found and is probably present in 100% of the patients. However, frank nephritis appears in only 20-30% of unselected children. The entire clinical spectrum of glomerulonephritis may occur in Henoch-Schoenlein purpura. The most common renal manifestations are hematuria with mild-to-moderate proteinuria.
The duodenum and small intestine are the most frequently involved segments of the GI tract. Duodenal ulcers also occur. Massive GI bleeding has been reported in Henoch-Schoenlein purpura.[24] Ileal vasculitis has also been reported.
Arthritis and/or arthralgia affects 60-75% of patients and is the presenting feature in 25%. Joints may be swollen, tender, and painful. The knees and ankles are most commonly affected. On rare occasions, symptoms involve the fingers and wrists. Findings are transient but can occur again during active disease. The joints are not permanently deformed.
Vasculitis involving the myocardia can occur. Vasculitis can involve the lungs, resulting in pulmonary hemorrhage or severe bilateral pulmonary hemorrhage. Vasculitis may cause stenosing ureteritis, priapism, penile edema, or orchitis. Ha and Lee reported that neurologic symptoms, localized edema, and high serum C3 levels show a significant relation with scrotal involvement in male patients with Henoch-Schoenlein purpura.[14] Vasculitis involving the CNS and intracranial hemorrhage has been reported.
Bilateral subperiosteal orbital hematomas have been noted. Adrenal hematomas have occurred. In rare patients, acute pancreatitis is the sole presenting feature of Henoch-Schoenlein purpura.[25] A case involving the cystic changes of the ovaries and Henoch-Schoenlein purpura has been reported.[26]
Causes
The conditions below may precede Henoch-Schoenlein purpura.
Infections include the following:
- Mononucleosis
- Group A streptococcal infection (most common)
- Hepatitis
- EBV infection
- Varicella-zoster viral infection
- Parvovirus B19 infection
- Hepatitis C–related liver cirrhosis
- Subacute bacterial endocarditis
Vaccinations include the following:
- Typhoid
- Measles
- Cholera
- Yellow fever
Environmental exposure to allergens include the following:
- Drugs (eg, ampicillin, erythromycin, penicillin, quinidine, quinine, cytarabine[30] )
- Foods
- Horse serum
- Cold exposure
- Insect bites
Glomerulocystic kidney disease has also been noted.
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