Several infectious skin diseases also cause a rash. These can be caused by a number of infections with bacteria or viruses, and infestations of mites within the skin. Some infectious skin diseases, such as scabies, are caused by mites that bore into the skin surface causing irritation and a localised rash.
Now, as for your question about when to start taking oral contraceptives, there's really no hard-and-fast rule about when to start taking birth control pills. Starting in the first few days of your cycle is the surest way to prevent inadvertently taking pills while you are pregnant.
Safe Switching Method Not sure how to use the chart on the other side of this sheet? Do this: safely switch from one type of birth control to another by going straight from one method to the next one â no gap! â and use condoms or spermicide for the first 7 days.Pill Packs One note about switching from pills: you donât need to finish the birth control pill pack before switching.You can stop taking your pill at any point in the pack. If you are switching to pills, you should start by taking the first pill in the pack. You may have changes in your period after switching.ill Packs One note about switching from pills: you donât need to finish the birth control pill pack before switching. You can stop taking your pill at any point in the pack. If you are switching to pills, you should start by taking the first pill in the pack. You may have changes in your period after switching.