Welcome to healthcare magic
From your description you seem to have acne keloidalis
nuchae. Recurrent episodes of boils occur over nape of neck with raised scars. Even though it is a chronic disease there are treatments for it. Whenever you have infected lesions it has to be treated with antibiotics. For the scars topical steroids
, Intralesional steroid injection, topical retinoids
etc have been tried.
Precautions you need to take include avoiding short hair cut ( crew cut or navy cut), avoiding tight occlusive garments( tight collars ) and rubbing or massaging.
Hope this helped