Skin lesions on the back can have many different causes and the specialists involved in the diagnosis and treatment include internists
Skin tags are an outgrowth of normal skin. They occur in about one quarter of all adults, and increase in frequency with age. The tendency to have skin tags often runs in the family. Skin tags can appear during pregnancy and are found perianally in patients with Crohn's disease as well.
Skin tags usually occur in sites of friction in the arm pits, neck and groin regions and only become symptomatic when caught on clothing or jewelery. Sometimes they turn red or black if they become twisted on their blood supply.
Diagnosis of skin tags is based only on clinical appearance and they must be differentiated from other skin lesions based on examination by a professional.
Treatment of skin tags do not prevent new skin tags from forming in predisposed areas but often to prevent recurrences of the same skin tag.
It is not possible to come to a diagnosis without examining the patient with skin findings. The strong recommendation is therefore to get a referral to a dermatologist
and get evaluated in person.