What are common side effects of using the birth control patch?

The birth control patch can indeed cause skin irritation because it is applied directly to the skin, which may lead to localized reactions in some users. This irritation can manifest as redness, itching, or a rash at the site where the patch is adhered. The adhesive used in the patch may also cause sensitivity in certain individuals.

While nausea and vomiting, weight gain, and headaches are also recognized side effects associated with hormonal contraceptives, they are more generalized effects that affect the body systemically rather than being directly related to the application site of the patch. Skin irritation is a specific and direct consequence of the patch's design and method of delivery, making it a particularly relevant side effect to consider when discussing the use of this contraceptive method.