Thanks for that. She has had the area biopsyed but I'm not sure for what exactly. I will get more info from here and post any updates. She has sent through a picture which I may post if she's okay with that.
Hello,
I cannot confirm anything without examination but it can be acne,impetigo,flat warts or herpes sores.
Exactly what is causing these sores can only be confirmed after examination and biopsy of the skin.I sincerely advise you to consult a dermatologist and get these possibilities evaluated.
Hope it helps.Take care and pls do keep me posted on how your sister is doing or in case you have any additional doubts.Kind regards.