Symptoms of postpartum depression are similar to what happens normally following childbirth. They include difficulty sleeping, appetite changes, excessive fatigue, decreased libido, and frequent mood changes.
If your horse needs a topical medication along with a pain reliever, your veterinarian may have you apply a dimethyl sulfoxide, or DMSO, solution. DMSO is quickly absorbed through the skin and is especially good at relieving swelling, as it pulls moisture from tissues.
The standard pharmaceutical preparation, acepromazine maleate, is used in veterinary medicine in dogs, and cats. It is used widely in horses as a pre-anaesthetic sedative and has been shown to reduce anaesthesia related death.