• Source: Trichorrhexis nodosa

Trichorrhexis nodosa is a defect in the hair shaft characterized by thickening or weak points (nodes) that cause the hair to break off easily.: 636  This group of conditions contributes to the appearance of hair loss, lack of growth, and damaged-looking hair.




Symptoms


Among the symptoms (and signs) for this condition are the following:

lack of apparent hair growth
hair appears patchy
hair breaks easily close to scalp
hair may have thickenings or nodes in the shaft
ends of hair thinned or split
whitish discoloration of hair tips
hair breaks easily at tips




= Complications

=
This condition is not dangerous but may affect self-esteem.




Causes


Trichorrhexis may have a genetic basis but appears to be precipitated by environmental factors. Among Caucasians the defect often appears at the ends of the hair shaft with splitting of the ends, thinning and whitish discoloration.
These conditions are directly related to environmental causes such as "perming", blow drying, aggressive hair brushing, and excessive chemical exposure.
In some cases, trichorrhexis nodosa may be caused by an underlying disorder such as argininosuccinic aciduria, Menkes' kinky hair syndrome, Netherton's syndrome, hypothyroidism, or trichothiodystrophy.




Diagnosis


Examination of the hair shafts with a microscope may reveal changes of trichorrhexis nodosa.




Prevention


Avoid aggressive brushing and grooming, strong chemicals, permanents, straightening, and similar hair-damaging habits.




Treatment


Improving environmental factors will reduce damage to the hair. Gentle brushing with a soft brush should replace more aggressive brushing, ratting, or other procedures. Harsh chemicals such as hair straightening compounds and permanents should be avoided. The hair should not be ironed. Excessively harsh shampoo should be avoided. Hair conditioners should be used.




Prognosis


This condition is self-limiting. Improvements in grooming techniques and in environmental conditions will correct the abnormality.




See also


Trichomegaly
List of cutaneous conditions




References






External links

Kata Kunci Pencarian:

• Sindrom Netherton
• Trichorrhexis nodosa
• Trichorrhexis
• Trichorrhexis invaginata
• Body odor
• Growth hormone deficiency
• Netherton syndrome
• Trichoptilosis
• Uncombable hair syndrome
• Samuel Wilks
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