Table 1.
Clinical manifestations and possible triggers in HSP on admission
| Number of cases (%) | |
|---|---|
| Clinical manifestations | |
| Purpura | 2074 (100.0%) |
| Arthritis/arthralgia | 796 (38.4%) |
| Abdominal pain | 729 (35.1%) |
| Renal involvement | 621 (29.9%) |
| Proteinuria | 161 (7.8%) |
| Hematuria | 153 (7.4%) |
| Hematuria plus proteinuria | 307 (14.8%) |
| Possible triggers | |
| Infection | 1030 (49.7%) |
| Infectious sites | |
| Respiratory tract infection | 926 (44.6%) |
| Gastrointestinal infection | 103 (5.0%) |
| Urinary tract infection | 20 (1.0%) |
| Infectious agents | |
| Streptococcal infection | 393 (18.9%) |
| HP infection | 87 (4.2%) |
| MP infection | 84 (4.1%) |
| Parainfluenza infection | 10 (0.5%) |
| TB infection | 4 (0.2%) |
| RSV infection | 3 (0.1%) |
| Toxoplasma gondii infection | 2 (0.1%) |
| Allergy | 289 (13.9%) |
| Food allergy | 247 (11.9%) |
| Drug allergy | 23 (1.1%) |
| House dust mite allergy | 14 (0.7%) |
| Grass pollen allergy | 5 (0.2%) |
| Injury | 20 (1.0%) |
| Surgery | 14 (0.7%) |
| Tick bite | 12 (0.6%) |
| Vaccination | 8 (0.4%) |
| Unknown | 886 (42.7%) |