Rheumatoid arthritis
Rheumatoid arthritis (RA) is a disorder in which the bodys own immune system starts to attack body tissues. The attack is not only directed at the joint but to many other parts of the body. In rheumatoid arthritis, most damage occurs to the joint lining and cartilage which eventually results in erosion of two opposing bones. RA often affects joints in the fingers, wrists, knees and elbows, is symmetrical (appears on both sides of the body), and can lead to severe deformity in a few years if not treated. RA occurs mostly in people aged 20 and above. In children, the disorder can present with a skin rash, fever, pain, disability, and limitations in daily activities. With earlier diagnosis and aggressive treatment, many individuals can lead a better quality of life than if going undiagnosed for long after RAs onset. The risk factors with the strongest association for developing rheumatoid arthritis are the female sex, a family history of rheumatoid arthritis, age, obesity, previous joint damage from an injury, and exposure to tobacco smoke.Bone erosion is a central feature of rheumatoid arthritis. Bone continuously undergoes remodeling by actions of bone resorbing osteoclasts and bone forming osteoblasts. One of the main triggers of bone erosion in the joints in rheumatoid arthritis is inflammation of the synovium, caused in part by the production of pro-inflammatory cytokines and receptor activator of nuclear factor kappa B ligand (RANKL), a cell surface protein present in Th17 cells and osteoblasts.
It may include: [4] [5]
Supplemental formulas and/or gastrostomy tube placement to meet nutritional needs and improve the growth delay,Ongoing physical, occupational, and speech therapies,Surgery to treat skeletal abnormalities, gastrointestinal problems, congenital heart defects and other health problems, and,
Medications to prevent or control seizures.Research into CdLS ongoing

History
The first documented case was in 1916 by Winfried Robert Clemens Brachmann (1888–1969), a German physician who wrote about the distinct features of the disease from his 19-year-old patient, followed in 1933 by Cornelia Catharina de Lange (1871–1950), a Dutch pediatrician after whom the disorder has been named. CdLS was formerly known as Brachmann-de Lange Syndrome. References
External links

GeneReviews/NCBI/UW/NIH entry on Cornelia de Lange syndrome
Malik, Lamees Mahmood; Khan, Ghazala Aziz; Azfar, Nadia Ali; Jahangir, Muhammad (2011). "Cornelia de Lange Syndrome - a cause of hypertrichosis in children: case report and review of literature". Journal of Pakistan Association of Dermatologists. 21 (3): 211–214. Gale A270898918.