Hello Akhan Gordon,
Thanks for posting your query.
Group G Streptococci is a bacteria which usually rarely causes infections in humans but can occur when a human gets in contact with a carrier animal like a dog, cat etc. It needs to be treated because of 1. your present medical condition i.e eczema
2. family history of psoriasis
This so as to limit the chances of the bacteria causing serious affections like sepsis. Choice of antibiotics will be good if it was done after a blood culture
+ sensitivity test. Antibiotics usually takes from 3-10 days treatment. Can only go beyond if there is resistance to treatment.
Your eczema could be handled with topical steroid
creams like hydrocortisone
hope this helps