Encyclopedia Symptoms / / May 24, 2016
Alternative names: transverse palmar crease, monkey line, the line of Simian
«Monkey fold" - it's just one line going across the palm.People usually have two or three creases on the palms.And this line is called "monkeypox" because monkeys, in contrast to men, there is only one fold (or line) on the hand.
term "monkey fold" are often used, as it carries a negative connotation.Such a single crease in the palm of your hand, usually referred to simply as "one palmar crease."
Strong lines (called "the bends palmar crease") appear on the palms of hands and soles of the feet.In the palm, usually there are three such folds.But sometimes horizontal creases join together to form one.
folds develop while the baby grows in the womb - as a rule, in the 12th week of pregnancy.
One ( "monkey") palmar crease occurs in about 1 in 30 people.Men are twice as likely than women to have this symptom.Some palmar creases indicate problems with development and are associated with genetic disorders such as Down syndrome.
Causes of simian line
«Monkey" palmar crease - often normal.However, it can also be associated with:
- Down's syndrome;
- syndrome Aarskoga Scott (ACC);
- Cohen syndrome;
- fetal alcohol syndrome;
- trisomy 13;
- rubella syndrome;
- Turner syndrome;
- Klinefelter's syndrome;
- gonadal dysgenesis;
- syndrome Cri-du-sha ( "cat cry" syndrome).
Diagnosis and treatment
baby with one ( "monkey") palmar crease may also have other symptoms and signs that, when taken together, define a specific syndrome or condition.Diagnosis of this condition is based on family history, personal history of the patient's disease and their full medical examination.
doctor may ask the patient questions - such as, eg:
- if he had a family history of Down syndrome or other serious disorders associated with a single palmar crease;
- is there still somebody in the family, one palmar crease without other symptoms;
- whether the patient's mother drank alcohol during her pregnancy by him;
- which still have symptoms of the patient.
Based on the answers to these questions, the medical history and physical exam, the doctor may prescribe further tests are necessary.