Question: What is (are) Dominant dystrophic epidermolysis bullosa ?
Answer: Dominant dystrophic epidermolysis bullosa (DDEB) is a type of epidermolysis bullosa (EB), which is a group of rare inherited conditions in which the skin blisters extremely easily. DDEB is one of the milder forms of EB, although the severity is variable. Blisters may be present at birth, but typically appear during early childhood; occasionally they do not develop until later in life. Blisters often become more numerous and tend to occur over vulnerable sites such as knees, ankles, elbows and knuckles. In adulthood, they usually become less frequent and scars fade. Other signs and symptoms of DDEB may include dystrophic or absent nails, constipation, dental caries and swallowing problems. It is caused by mutations in the COL7A1 gene and is inherited in an autosomal dominant manner. Treatment typically includes treating blisters and avoiding infection.
Source: GARD

Question: What are the symptoms of Dominant dystrophic epidermolysis bullosa ?
Answer: What are the signs and symptoms of Dominant dystrophic epidermolysis bullosa? Dominant dystrophic epidermolysis bullosa (DDEB) is consivered to be a more mild form of dystrophic epidermolysis bullosa (DEB). Blistering is often limited to the hands, feet, knees, and elbows. Blistering may be relatively benign, but still heals with scarring and milia. Dystrophic nails, especially toenails, are common and loss of nails may occur. In the mildest forms, dystrophic nails may be the only characteristic noted. Blistering in DDEB often improves somewhat with age. The Human Phenotype Ontology provides the following list of signs and symptoms for Dominant dystrophic epidermolysis bullosa. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Abnormal blistering of the skin 90% Abnormality of the fingernails 90% Abnormality of the toenails 90% Cheilitis 90% Carious teeth 50% Hypopigmented skin patches 50% Abnormal renal physiology 7.5% Abnormality of the urethra 7.5% Anemia 7.5% Corneal erosion 7.5% Feeding difficulties in infancy 7.5% Tracheoesophageal fistula 7.5% Atrophic scars - Autosomal dominant inheritance - Congenital onset - Milia - Nail dysplasia - Nail dystrophy - The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.
Source: GARD

Question: What are the treatments for Dominant dystrophic epidermolysis bullosa ?
Answer: How might dominant dystrophic epidermolysis bullosa be treated? There is currently no cure for all types of dystrophic epidermolysis bullosa (DEB). Treatment generally focuses on managing signs and symptoms. For some individuals, such as those that have a mild form of dominant dystrophic epidermolysis bullosa (DDEB), dystrophic nails may be the only manifestation. However, other individuals may have much more severe problems that need to be managed. Management typically focuses on treating blisters and avoiding or treating infections. Wound care usually included treatment of new blisters by lancing and draining. Additionally in most cases, wounds are then dressed with a non-adherent material, covered with padding for stability and protection, and secured with an elastic wrap for integrity. Due to the increased risk of bacterial resistance, topical antibiotic ointments and antimicrobial dressings should be reserved for those wounds that are colonized with bacteria and fail to heal, referred to as critical colonization." Individuals with epidermolysis bullosa (EB) have increased caloric and protein needs due to the increased energy utilized in wound healing. Involvement of the digestive system in some forms of EB may limit nutritional intake. Infants and children with more severe forms of EB and failure to thrive usually require attention to fluid and electrolyte balance and may require nutritional support, including a gastrotomy feeding tube. Anemia is typically treated with iron supplements and transfusions as needed. Other nutritional supplements may include calcium, vitamin D, selenium, carnitine, and zinc. Surveillance is important for individuals with DEB. Biopsies of abnormal-appearing wounds that do not heal may be recommended in some types of DEB due to predisposition to squamous cell carcinoma, beginning in the second decade of life. Screening for deficiencies of iron, zinc, vitamin D, selenium, and carnitine is typically recommended after the first year of life. Routine echocardiograms are recommended to identify dilated cardiomyopathy, and bone mineral density studies are recommended to identify osteoporosis. Activities and bandages that may traumatize the skin (including all adhesives) should typically be avoided. Recent treatment advancements and therapies under investigation include but are not limited to: Use of biological dressings to treat chronic or recurrent skin ulcers Bone marrow transplantation Intra-dermal (in the skin) injection of fibroblasts Protein replacement therapy (intra-dermal injection of type VII collagen) Gene therapy Revertant mosaicism Gene correction technologies (ex. CRISPR) DEBRA International has developed clinical practice guidelines for different aspects of treating EB including wound care and pain management. Click on the link to see their completed guidelines.
Source: GARD