Welcome to Mamapedia!
I read this post and your previous one. It sounds to me like you have a reaction to something internal, not external. While topical remedies can occasionally relieve mild itching, they are not good long term. First of all, they are very expensive. Secondly, they are just treating the reaction/symptom and not the cause.
Some skin reactions are caused by topical irritants (detergents, soaps, plants like poison ivy or juniper that many people react to, etc.) but your problem sounds more extensive and is spreading. That's why I think it's based on something you're taking in. Antibiotics can cause body-wide yeast infections, for example, as can other disruptions in the body's balance of good bacteria. Allergens of any kind can cause a disruption when there is already a nutritional imbalance, however slight.
The body's instinct is to get rid of the irritant. There are only 3 ways to do that: pores (skin), mucus membranes (think spring allergies & runny noses), and digestive elimination (urine/feces).That's it. The skin is the largest organ and it's incredibly responsive to internal imbalances even though we tend to think of it as reacting only to surface issues (which is why we seem to always resort to creams and ointments and baths and soaks.
Barring any obvious change like a recent bout of antibiotics (and since you said you haven't had insurance, it sounds like you haven't been to the doctor). My guess is that, if nothing really obvious jumps out in your visit, the doctor will try a prescription cream all over your body and shortly thereafter propose a long and involved series of tests and an extremely restrictive elimination diet. These can be nightmares, and often ineffective. Before you undertake a long series of tests, since you have new insurance and maybe a deductible, please check on what this will cost you out of pocket. As what you'll be tested for, and what the next step would be depending on positive reactions.
Elimination diets take a long time - you'll be reading labels extensively for all traces of wheat, dairy, egg and so on, and you won't be able to go out to eat much (restaurants or friends' houses) because of the risk of cross contamination. I've gone through this with so many people in my work in nutritional epigenetics. Some people are content to do it but others find it a huge nuisance with limited success.
The easier approach that's also cheaper and with better results is to actually ADD nutrients to the body to restore balance. The old model of "eat right and take drugs" went into disuse over a decade ago after the American Medical Association studied the data and came out with the finding that virtually everyone in the US is unable to get their nutrition from their food anymore. There are many reasons for this. Then the idea of "eat right and take a vitamin you're 'low' in" was popular for a while, but that's gone out of practice and is no longer really recommended by any physicians or nutritionists who are connected to research and findings. There are still a lot of doctors preaching the same old stuff, but the cutting edge researchers have all abandoned that line of thought - research doesn't support it, and 30 years of doing it that way hasn't made the population any healthier - we have epidemic rates of "food allergies" and autoimmune diseases.
Epigenetics is the science dealing with the messages that your cells get that tell them which genes to turn on and turn off. When too many bad genes get turned on and the good ones get turned off, cells don't perform as they should. The results can be anything from inefficient processing/functioning to autoimmune reactions to inflammation. Using a dietary ingredient that has been shown in research to repair the epigenetic response and help the cell function properly through cellular nutrition has been shown to reverse so many of these unpleasant health trends. I'm working with the scientists involved in this, through a partnership with such organizations as the NIH, the American Heart Association, the National Cancer Institute, the Council for Responsible Nutrition, the FDA Good Manufacturing Practices, and numerous university research departments. It turns out that a non-prescription approach to systemic cellular health offers much greater relief with no side effects. The news media are picking up on this, but too slowly. Too many news shows are still paid for by drug company advertising as well as the processed food industry. So it will take a while for this to become common conversation but it's definitely well researched. And eating our way to health makes more sense than elimination diets and endless testing and drugs.
Your problem is not that long-standing so my guess is that you would start to see relief pretty quickly, maybe 2 weeks, and with results building over time. It's another way of looking at your problem without a long road of GI tests and prescriptions which may or may not have side effects.
