Pigmentary dysplasia

Dyspigotism is a skin disease caused by pigmentation disorder and is also a health problem that many people have. Generally speaking, chloasma, nevus of Ota, vitiligo, coffee spots or pigmented nevi are all pigmentary disorders. Decreased or abnormally increased skin pigmentation is the main cause of this type of disease. Below, we will introduce you to the relevant knowledge about pigmentary disorders.

1. What is pigmentary dysdermatosis?

Pigmentary dyskeratosis is a group of hereditary keratotic skin diseases, mainly characterized by dry skin. Accompanied by scaly desquamation. The disease usually occurs in children, and the main symptoms are dry and rough skin on the extensor side of the limbs or trunk, accompanied by diamond-shaped or polygonal scales, which look like fish scales or snake skin. It worsens in cold and dry seasons and improves in warm and humid seasons. Prone to relapse. Multi-lineage genetic factors cause abnormal proliferation and differentiation of epidermal cells, leading to increased cell proliferation and/or decreased cell shedding.

2. Causes of pigmentary dysplasia

Hypopigmentation is an abnormal decrease in pigmentation, usually limited to a small area of ​​the skin. It is often caused by a past skin inflammation and rarely has a genetic cause.

Pigmentary dysplasia is a condition in which there is a decrease or increase in skin pigmentation, either systemically or locally. Diseases with reduced pigmentation are often caused by a lack of melanin, resulting in local or systemic whitening of the skin, including albinism and vitiligo. Reduced pigmentation can also be secondary, such as lupus erythematosus, psoriasis, etc. Hyperpigmentation disorders are often caused by an increase in melanin.

3. What are the common pigmentary skin diseases?

Common pigmentary disorders include chloasma, vitiligo, tattoo, freckles, pigmented nevus, coffee-top spots, chloasma, freckle-like nevus, Riehl's melanosis, perioral lentigo, nevus of Ota, pigmented piloepidermal nevus, generalized lentigo, follicular erythematous nevus of the face and neck, pigmented pityriasis rosea, nevus maculae, congenital pigmented nevus, reticular dyschromia of the folds, Mongolian spots, tattoo, vitiligo, apigmented nevus, centrifugal acquired leukoplakia, hereditary symmetrical dyschromia, anemic nevus, etc.