According to the Ehlers–Danlos Society, the syndromes can also be grouped by the symptoms determined by specific gene mutations. Group A disorders are those that affect primary collagen structure and processing. Group B disorders affect collagen folding and crosslinking. Group C are disorders of structure and function of myomatrix. Group D disorders are those that affect glycosaminoglycan biosynthesis. Group E disorders are characterized by defects in the complement pathway. Group F are disorders of intracellular processes, and Group G is considered to be unresolved forms of EDS. Hypermobile EDS
Hypermobile EDS (hEDS, formerly categorized as type 3) is mainly characterized by hypermobility that affects both large and small joints. It may lead to frequent joint subluxations (partial dislocations) and dislocations. In general, people with this variant have skin that is soft, smooth, and velvety and bruises easily, and may have chronic muscle and/or bone pain. It affects the skin less than other forms. It has no available genetic test. hEDS is the most common of the 19 types of connective tissue disorders. Since no genetic test exists, providers have to diagnose hEDS based on what they know about the condition and the patients physical attributes. Other than the general signs, attributes can include faulty connective tissues throughout the body, musculoskeletal issues, and family history.
Syringocystadenoma papilliferum is a benign apocrine tumor.It can arise with nevus sebaceus. Additional images
See also
List of cutaneous conditions
Hidradenoma papilliferum
Papillary eccrine adenoma
List of cutaneous conditions associated with increased risk of nonmelanoma skin cancer

References


== External links ==