Tuesday, November 28, 2017

Al-Baras - partial emphysema.. hereditary pigment disorders in the melanocytes of the skin and hair simulating the disappearance of pigment patches of the skin with a lump of white hair



Piebaldism:
Hereditary pigment disorders in the melanocytes of the skin and hair, pretending the disappearance of pigment patches of the skin with a lump of white hair.
The pigmented lesions may appear at birth where the lesions remain unchanged for life.
The disorder is inherited as an autosomal dominant trait.
The white glaucoma and the trigonometric spot associated with the demise of pigmentation on the front are marked signs. Dermal pigmentation in the form of pigment residues in pests.
Metabolic disorders:
In phenyl ketone (P.K.U):
There is pale skin caused by a deficiency of phenylalanine oxidase, which disrupts the hepatic formation of tyrosine of phenylalanine.
skin diseases:
Inflammatory skin diseases that damage the basal layer of the skin such as lupus erythematosus or fungal infections of the skin, which acts as a vasculature of melanocytes leading to loss of skin color.