Purpura Haemorrhagica (immune-mediated vasculitis)
Purpura haemorrhagica is an immune-mediated, necrotising inflammation of small blood vessels (type III hypersensitivity). It classically appears about two to four weeks after a strangles infection (Streptococcus equi) or, more rarely, after vaccination/other infections, when the immune system damages the vessel walls with cross-reacting complexes. Typical are extensive oedema and pinpoint mucosal bleeding.
Veterinary care required
This condition belongs in veterinary diagnosis and treatment. Compounds are at most supportive.
Priority · vet & management
Purpura haemorrhagica is serious and belongs immediately in veterinary hands — diagnosis and therapy (including immunosuppressive corticosteroids, possibly antibiosis; prescription-only) determine the course. Early, consistent veterinary treatment has shown a favourable survival rate in studies; complementary feeds play no therapeutic role here.
Possible causes
- · immune-mediated vasculitis (type-III hypersensitivity)
- · previous strangles / Streptococcus equi exposure
- · more rarely after vaccination or other infections
- · formation of cross-reacting immune complexes at vessel walls
Supportive compounds · supplementary feed, not medication
Prevention
Consistent strangles management (isolation, clearing of persistent shedders) and attentive follow-up observation in the weeks after strangles/streptococcal infections help to detect purpura early.
Equiterna's take
Equiterna links purpura haemorrhagica didactically closely to strangles: it shows that an excessive immune response can follow weeks after the actual infection. The treatment is purely veterinary.
Usage note
This content is for information and education. It does not replace veterinary diagnosis or treatment. If your horse shows signs of illness, consult a veterinarian.
Equiterna is an intermediary platform for equine knowledge, marketplace and tools — not a veterinary-medicines dealer, veterinary practice or pharmacy. Compound information is study-attributed and free of healing claims. Legal framework: Regulation (EU) 2019/6 / TAMG (DE/AT), Feed Regulation (EC) 767/2009, FEI Prohibited Substances List, HWG.