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Connective tissue diseases can be classified into two groups: (1) a group of relatively rare genetic disorders affecting the primary structure of connective tissue; and (2) a number of acquired conditions where the connective tissues are the site of multiple, more or less distinct immune and inflammatory reactions.
Eosinophilic fasciitis (/ ˌ iː ə ˌ s ɪ n ə ˈ f ɪ l ɪ k ˌ f æ ʃ i ˈ aɪ t ɪ s, ˌ iː oʊ-,-ˌ f æ s i-/ [2] [3]), also known as Shulman's syndrome, [4] is an inflammatory disease that affects the fascia, other connective tissues, surrounding muscles, blood vessels and nerves.
The type II and XI collagenopathies are a group of disorders that affect connective tissue, the tissue that supports the body's joints and organs. These disorders are caused by defects in type II or type XI collagen. Collagens are complex molecules that provide structure, strength, and elasticity to connective tissue.
There are also uncompleted versions of recognized connective tissue diseases, in which clinical and serological symptoms allow for a diagnosis but classification criteria are not met. [67] The most prevalent strategy to diagnosis in clinical practice combines serological criteria with at least three clinical criteria.
Dermatomyositis is a form of systemic connective tissue disorder, a class of diseases that often involves autoimmune dysfunction. [12] [16] It has also been classified as an idiopathic inflammatory myopathy, along with polymyositis, necrotizing autoimmune myositis, cancer-associated myositis, and sporadic inclusion body myositis. [17]
Palisaded neutrophilic and granulomatous dermatitis (PNGS) is usually associated with a well-defined connective tissue disease, lupus erythematosus or rheumatoid arthritis most commonly, and often presents with eroded or ulcerated symmetrically distributed umbilicated papules or nodules on the elbows. [1] [2]
Pseudoxanthoma elasticum (PXE) is a genetic disease that causes mineralization of elastic fibers in some tissues. The most common problems arise in the skin and eyes, and later in blood vessels in the form of premature atherosclerosis.
A skin infection is an infection of the skin in humans and other animals, that can also affect the associated soft tissues such as loose connective tissue and mucous membranes. [ citation needed ] They comprise a category of infections termed skin and skin structure infections (SSSIs), or skin and soft tissue infections (SSTIs), [ 1 ] and acute ...