My 11-year old daughter was diagnosed with this out of the blue last weekend when she suddenly developed a scary non blanching rash on her legs and arms. She had a really bad headache and sore throat too. Tests showed she had blood and protein in her urine, but thankfully the blood tests showed her kidney function is fine so far. She has one sore knee, not swollen, and has been incredibly tired all week. All the medics reassure me this should be a 4-6 week affair with possible recurrences, and that long term kidney issues are really unlikely - though they will monitor her for 6 months. It’s hard to get proper information.... there are HSP Facebook groups but they are really alarming to read, seemingly full of those who have experienced the worst-cases scenarios! Anyone here with any experience to share?