Some of these symptoms are very subtle of obvious. It also causes low birth weight, slow growth, language difficulty, and possibly a heart defect or behavioral problems. In about 80% of patients with this disorder, the defect comes from the father. This defect in the chromosome usually happens randomly and is not hereditary. There are ways to find out if a child has Cri du Chat syndrome. At birth if the infant has a catlike cry, chromosome 5p deletion is strongly suspected. At this point chromosome testing would be performed. FISH (fluorescence in-situ hybridization) detects very small deletions. So far there is no treatment, but for behavioral issues there is therapy (such as head banging).
Chromosome 5p is a genetic disorder because it is missing a copy of genetic material. It is missing a region of chromosome 5. You can tell if one has it by simply looking at their physical features. It is not a life-threatening syndrome. There is no treatment but some aspects of it can be helped with