When did melasma begin?

When did melasma begin?

Between 1.5% and 33% of the population may get melasma and it happens more often during a woman’s reproductive years, and rarely happens during puberty. It usually starts between 20 and 40 years of age.

What is the main cause of melasma?

What causes melasma? Sun exposure: Ultraviolet (UV) light from the sun stimulates the melanocytes. A change in hormones: Pregnant women often get melasma. Skin care products: If a product irritates your skin, melasma can worsen.

What’s new in melasma?

Histologically, melasma can display increased epidermal and/or dermal pigmentation, enlarged melanocytes, increased melanosomes, solar elastosis, dermal blood vessels, and, occasionally, perivascular lymphohistiocytic infiltrates.

Where did melasma originate?

Cause. The exact cause of melasma is unknown. Melasma is thought to be the stimulation of melanocytes (cells in the dermal layer, which transfer the pigment melanin to the keratinocytes of skin) when the skin is exposed to ultraviolet light from the sun.

Is melasma inherited?

Is melasma hereditary? Melasma is more common in people with a family history of the condition, but it is not hereditary.

Is melasma related to liver?

Risk Factors for Developing Melasma Malnutrition may be a contributing factors because melasma is often found in people with abnormal liver function and vitamin B12 deficiency. Cosmetics containing hydroquinone may cause dark patches, like melasma.

Can lack of vitamin D cause melasma?

The relationship of Vitamin D3 deficiency and increased melanin production that leads to appearances of facial pigments such as melasma, unevenness and hyper pigmented patches.

What is the clinical presentation of melasma?

The clinical presentation of melasma is generally an asymptomatic light to dark brown hyperpigmentation with irregular borders [5]. Despite the border irregularity, it is considered a benign process. Asian populations, in particular, consider pigmentation abnormalities such as melasma more important in the aging process, rather than wrinkles [6].

What is the prevalence of melasma in Spain?

Studies on dermatoses that affect Latin American immigrants in Spain showed that 6.7% had some pigmentary change, compared to 3.2% of the Spanish population. Melasma occurred in 2.5% of Hispanic-Americans and 0.5% of Spaniards (OR = 5.1).

Is contact sensitivity a cause of melasma?

Cosmetics contact sensitivity appears as an important cause of melasma not associated with pregnancy, lactation, or hormone therapy. 1. Introduction The use of cosmetics and skin care products for grooming of both men and women has seen tremendous rise the world over in the last few years.

Are there any drugs that cause melasma?

Drugs containing phototoxic agents, phenothiazines, and anticonvulsants have been particularly linked to melasma. However, cosmetics have been rarely considered in the list of causes of melasma [7, 10]. There is a predilection for the involvement of cheeks, forehead, upper lip, nose, chin, and sometimes neck as well.