A physician often can diagnose<unk>  by looking at the skin. A family history is also useful in determining the mode of inheritance. In some cases, a skin biopsy is done to help to confirm the diagnosis while in others genetic testing may be helpful in making a diagnosis. Diabetes has not been definitively linked to acquired<unk>  or<unk>  vulgaris; however, there are case reports associating new onset<unk>  with diabetes.<unk>  has been found to be more common in Native American, Asian, Mongolian groups. There is no way to prevent<unk> .<unk>  is a genetically and phenotypically heterogeneous disease that can be isolated and restricted to the skin manifestations or associated with extracutaneous symptoms. One of which is limb reduction defect known as CHILD syndrome; a rare inborn error of metabolism of cholesterol biosynthesis that is usually restricted to one side of the body. One case with symptoms matching CHILD syndrome has been described as having a likely-different cause.
Ichthyosis
Ocular melanosis
Band keratopathy
Lamellar ichthyosis
Ocular rosacea
Melasma
Bullous keratopathy
Erythrasma