xeroderma$92725$ - definition. What is xeroderma$92725$
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%ما هو (من)٪ 1 - تعريف

AUTOSOMAL RECESSIVE DISEASE THAT IS CHARACTERIZED BY A DEFICIENCY IN THE ABILITY TO REPAIR ULTRAVIOLET DAMAGE THAT HAS MATERIAL BASIS IN AUTOSOMAL RECESSIVE INHERITANCE OF DNA REPAIR
Xeroderma Pigmentosum; Sunpoisoning; Xeroderma pigmentosa; Xeroderma pigmentosum, complementation group G; Xeroderma pigmentosum group d protein; Xeroderma pigmentosum, type 1; Xeroderma pigmentosum, type 2; Xeroderma pigmentosum, type 3; Xeroderma pigmentosum, type 4; Xeroderma pigmentosum, type 5; Xeroderma pigmentosum, type 6; Xeroderma pigmentosum, type 7; Xeroderma pigmentosum, variant type; Xeroderma pigmentosum type 1; Xeroderma pigmentosum type 2; Xeroderma pigmentosum type 3; Xeroderma pigmentosum type 4; Xeroderma pigmentosum type 5; Xeroderma pigmentosum type 6; Xeroderma pigmentosum type 7; Xeroderma pigmentosum variant type; Xeroderma pigmentosum type I; Xeroderma pigmentosum type II; Xeroderma pigmentosum type III; Xeroderma pigmentosum type IV; Xeroderma pigmentosum type V; Xeroderma pigmentosum type VI; Xeroderma pigmentosum type VII; Xeroderma pigmentosum I; Xeroderma pigmentosum II; Xeroderma pigmentosum III; Xeroderma pigmentosum IV; Xeroderma pigmentosum V; Xeroderma pigmentosum VI; Xeroderma pigmentosum VII; XP1; XP3; XP4; XP5; XP6; XP7; Xeroderma pigmentosum with normal DNA repair rates; Xeroderma pigmentosum group A; Xeroderma pigmentosum group B; Xeroderma pigmentosum group C; Xeroderma pigmentosum group D; Xeroderma pigmentosum group E; Xeroderma pigmentosum group F; Xeroderma pigmentosum group G; Allergy to light; Light allergy; Allergic to light; XPV; Cerebrooculofacioskeletal syndrome 3; Cockayne syndrome complex; Xeroderma pigmentosum, complementation group c; Xeroderma pigmentosum-Cockayne syndrome; Xeroderma pigmentosum–Cockayne syndrome; DDB2-Related Xeroderma Pigmentosum; Moon children
  • Child with xeroderma pigmentosum in Nepal

Xeroderma         
  • Effects of xeroderma on the hand
A CONDITION CHARACTERIZED BY DRY SKIN
Xerosis cutis; Dry skin; Ashy skin; Conjunctival xerosis; Xerosis; Skin dryness; Xerodermia; Dry-skinned; Dry skinned; Dry-skin; Chapped skin
·noun Ichthyosis.
II. Xeroderma ·noun A skin disease characterized by the presence of numerous small pigmented spots resembling freckles, with which are subsequently mingled spots of atrophied skin.
xeroderma         
  • Effects of xeroderma on the hand
A CONDITION CHARACTERIZED BY DRY SKIN
Xerosis cutis; Dry skin; Ashy skin; Conjunctival xerosis; Xerosis; Skin dryness; Xerodermia; Dry-skinned; Dry skinned; Dry-skin; Chapped skin
[?z??r?(?)'d?:m?, ?z?-]
¦ noun any of various diseases characterized by extreme dryness of the skin, especially a mild form of ichthyosis.
Origin
C19: mod. L., from xero- + Gk derma 'skin'.
Vitamin A deficiency         
LACK OF VITAMIN A IN BLOOD AND TISSUES
Vitamin A Deficiency; Vitamin a deficiency; Hypovitaminosis A; Phrynoderma; Keratosis follicular due to vitamin A deficiency; Hyperkeratosis due to vitamin A deficiency; Xeroderma due to vitamin A deficiency
Vitamin A deficiency (VAD) or hypovitaminosis A is a lack of vitamin A in blood and tissues. It is common in poorer countries, especially among children and women of reproductive age, but is rarely seen in more developed countries.

ويكيبيديا

Xeroderma pigmentosum

Xeroderma pigmentosum (XP) is a genetic disorder in which there is a decreased ability to repair DNA damage such as that caused by ultraviolet (UV) light. Symptoms may include a severe sunburn after only a few minutes in the sun, freckling in sun-exposed areas, dry skin and changes in skin pigmentation. Nervous system problems, such as hearing loss, poor coordination, loss of intellectual function and seizures, may also occur. Complications include a high risk of skin cancer, with about half having skin cancer by age 10 without preventative efforts, and cataracts. There may be a higher risk of other cancers such as brain cancers.

XP is autosomal recessive, with mutations in at least nine specific genes able to result in the condition. Normally, the damage to DNA which occurs in skin cells from exposure to UV light is repaired by nucleotide excision repair. In people with xeroderma pigmentosum, this damage is not repaired. As more abnormalities form in DNA, cells malfunction and eventually become cancerous or die. Diagnosis is typically suspected based on symptoms and confirmed by genetic testing.

There is no cure for XP. Treatment involves completely avoiding the sun. This includes protective clothing, sunscreen and dark sunglasses when out in the sun. Retinoid creams may help decrease the risk of skin cancer. Vitamin D supplementation is generally required. If skin cancer occurs, it is treated in the usual way. The life expectancy of those with the condition is about 30 years less than normal.

The disease affects about 1 in 100,000 worldwide. By region, it affects about 1 in 370 in India, 1 in 20,000 in Japan, 1 in 250,000 people in the United States and 1 in 430,000 in Europe. It occurs equally commonly in males and females. Xeroderma pigmentosum was first described in the 1870s by Moritz Kaposi. In 1882, Kaposi coined the term xeroderma pigmentosum for the condition, referring to its characteristic dry, pigmented skin. Individuals with the disease have been referred to as "children of the night" or "moon children".