Stiff skin syndrome (also known as "Congenital fascial dystrophy") is a cutaneous condition characterized by ‘rock hard’ induration, thickening of the skin and subcutaneous tissues, limited joint mobility, and mild hypertrichosis in infancy or early childhood. Immunologic abnormalities or vascular hyperactivity are not present in patients.Not much is known about it, cause or treatment, and further investigation is required, as it has only been reported 41 times throughout history. Genetics
This condition is associated with mutations in the Fibrillin 1 (FBN1) gene. Diagnosis
Differential diagnosis
Other conditions associated with mutations in this gene include acromicric dysplasia, Marfan syndrome and its variant Marfanoid–progeroid–lipodystrophy syndrome, autosomal dominant Weill-Marchesani syndrome, isolated ectopia lentis, MASS phenotype, and Shprintzen-Goldberg syndrome. See also
Scleroderma
Self-healing papular mucinosis
List of cutaneous conditions

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Streptococcal intertrigo is a skin condition that is secondary to a streptococcal bacterial infection. It is often seen in infants and young children and can be characterized by a fiery-red color of the skin, foul odor with an absence of satellite lesions, and skin softening (due to moisture) in the neck, armpits or folds of the groin. : 262  Newborn children and infants commonly develop intertrigo because of physical features such as deep skin folds, short neck, and flexed posture. Prompt diagnosis by a medical professional and treatment with topical and/or oral antibiotics can effectively relieve symptoms. Etiology
The main causes of intertrigo are mechanical factors, such as heat and maceration of the skin, and secondary infections, which mostly happens due to moisture build-up in the skin folds, making those areas ideal feeding places for secondary bacterial and fungal infections. A lot of cases of this disease are seen in individuals with diabetes mellitus since they have higher pH levels in their skin folds because of their condition. Given these reasons mentioned above, there have been higher cases of intertrigo in individuals with obesity, diabetes mellitus, immunodeficiency secondary to virus infection, large skin folds, are bedridden, or wear diapers that trap moisture (i.e. babies or older adults using incontinence supplies). Signs and symptoms
Streptococcal intertrigo commonly presents with a beefy-red, smooth, shiny lesion that has well-defined borders. There are no satellite lesions surrounding the area, and a distinct foul smell is common. The infection may be accompanied by general malaise and a low-grade fever.