As always, if conditions persist, you can always consult with the physician of your choice, if you so choose. It usually takes years of abuse for your body to reach a disease state, so give it at least a little time to restore you to health. As with healing reactions, these are nothing to be concerned with. The skin is the largest organ of the body. It is your first line of defense against a hostile environment of airborne toxins, microbes, parasites, and filth.
Some people observe small insects coming out of their skin during some of their baths.
Remember, you can pick up parasites even from your house pets - and many parasites, such as lice, make their home in your skin. So getting rid of these pests should be a welcome sight, and not something to frighten you. It should be quickly noted, however, that these responses are widely reported but are, by no means, universal. Some individuals get all or some of these responses from longer term use, but there is no way to predict in advance who will and will not experience them. In answering this question, please be aware that laws concerning H2O2 usage vary from country to country.