It all depends on which type you have and why. With these definitions in mind, we will take a look at the various types of aggravations and I will attempt to explain why you should be glad to see some kinds, but not so glad to see others. It is brought about by the introduction of a homeopathic remedy, administered according to the law of similars. The artificial disease is similar, but stronger, than the original dis-ease condition. Because this artificial disease is stronger than the original disease, the vital force may react more strongly to it, thereby exciting your symptoms to the point that they appear to be worsening.
Artificial diseases are curative when they are similar, but stronger.
In most circumstances, homeopathic aggravations are welcomed by knowledgeable homeopaths, as most believe that this aggravation is a precursor to a cure. It is believed to be a positive sign that the chosen remedy is doing its job, and affecting a cure. The theory behind introducing artificial disease to the vital force is a concept from Hahnemann. The stronger dis-ease would always win out and manifest its symptoms. Some people have a bit of a problem understanding this, but it is really not that difficult.