cyst Verrucous vascular malformation (Angiokeratoma circumscriptum naeviforme) Connective tissue diseases See also: Category:Connective tissue diseases Connective tissue diseases are caused by a complex array of autoimmune responses that target or affect collagen or ground substance . [ 39 ] Acute cutaneous lupus erythematosus Atrophoderma of Pasini and Pierini (Dyschromic and atrophic