When ringworm strikes, it can form pustules and require a surgical drainage. This photos shows the scar from this happening to him when he was 3 years old. Fortunately, this can be treated with hair transplants. Read more and see more photos here: https://www.skinsight.com/skin-conditions/child/kerion
4 months on finasteride. You clearly have growth starting up. Hair grows at a rate of 1/2 inch/month so in a few more months you will see a nice contribution to your hairline
From the recent issue of the Hair Transplant Forum and also an article in the recent issue of the Journal of the American Medical Association, there is a report that CBD may work on preventing hair loss similarly effective but by a different action to Finasteride. There is no mechanism suggested for this finding at this time.
Apologies for the poor photo