Hypo pigmentation
Hypopigmentation in skin is the result of a reduction in melanin production. Examples of hypopigmentation include: Vitiligo: Vitiligo causes smooth, white patches on the skin. … This results in a complete lack of pigmentation in skin, hair, and eyes.Hypopigmentation is the loss of skin color. It is caused by melanocyte or melanin depletion, or a decrease in the amino acid tyrosine, which is used by melanocytes to make melanin.Inflammation (such as eczema, seborrhoeic dermatitis) and trauma to the skin (such as cryotherapy or liquid nitrogen burns) may cause a temporary lightening of the skin and decrease in pigmentation by affecting the way melanocytes (pigment cells) work and produce melanin (pigment).Although it can start at any age, vitiligo often first appears between the ages of 20 and 30. The white patches may begin on your face above your eyes or on your neck, armpits, elbows, genitalia, hands or knees. They’re often symmetrical and can spread over your entire body.Hyperpigmentation means a darkening of the skin and discoloration, usually due to higher than normal levels of melanin. The three main types of hyperpigmentation include: post-inflammatory hyperpigmentation (PIH), melasma, and sun damage.Melanin is the chemical that gives skin its colouring. Hypopigmentation is caused by disease, illness, burns, injury, and trauma to the skin. Hypopigmentation is referred to as loss of skin colouring, and can be known as skin depigmentation.