Generally, itching which is basically irritating sensation that makes you want to scratch your skin may be the result of allergic reactions to food, insect bites, pollen, and medicines, skin conditions such as eczema, psoriasis, and dry skin, Irritating chemicals, cosmetics, and other substances, parasites such as pinworms, scabies, head and body lice, or sometimes liver, kidney, or thyroid diseases.
Exposure to high heat and humidity may also cause itching. In that case, prolonged sitting in padmasana, sukhasana can cause itching in the skin's closed areas and in such cases, you may avoid such areas which are prone to high heat and cause perspiration, that may be resulting in itching and practice agnisara kriya in moderate and hygienic place which does not have humidity. You can also share as to what skin areas you have itching issues, so that we can explore more and correlate accordingly.
But if your itching is severe, does not go away after a few weeks, or does not have an apparent cause, it is better to consult your doctor.
