itch is only mildly contagious. It can spread from person to person by shared use of contaminated towels or clothing or through direct contact during sexual intercourse with someone who has the infection.'
You could read more about the condition at the following link -
This could be eczema too, nothing can be said with surety without having a look at the lesions. It would be best to consult a skin specialist for your symptoms.
Let us know if you need any other information and post us about how you are doing.