melasma
MELASMA
Melasma is an acquired hypermelanosis skin disorder that commonly affects women than men. It is characterized by irregular light to dark brown macules occurring in the sun-exposed areas of the face, neck and arms.
It occurs most commonly with pregnancy and with the use of contraceptive pills.
Other factors implicated in the etiopathogenesis are photosensitizing medications, mild ovarian or thyroid dysfunction and certain cosmetics.
Solar and ultraviolet exposure is the most common important factor in its development.

Definition

  • Acquired hyperpigmentary skin disorder characterized by irregular light to dark brown macules occurring in the sun-exposed areas of the face, neck & arms
  • Occurs most commonly with pregnancy (chloasma) & with the use of contraceptive pills
  • Other factors implicated in the etiopathogenesis are photosensitizing medications, genetic factors, mild ovarian or thyroid dysfunction, & certain cosmetics
  • Most commonly affects Fitzpatrick skin phototypes III & IV 
  • More common in women than in men
  • Rare before puberty & common in women during their reproductive years
  • Solar & ultraviolet exposure is the most important factor in its development

Etiology

  • Other factors implicated in the etiopathogenesis are photosensitizing medications, mild ovarian or thyroid dysfunction, & certain cosmetics 
  • Solar & ultraviolet exposure is the most important factor in its development
Editor's Recommendations
Most Read Articles
21 Jul 2018
Although many patients with atopic dermatitis (AD) use antihistamines, no high-level evidence exists to prove that nonsedating antihistamines reduce itch in patients with AD or provide benefit in controlling AD symptoms, except perhaps sleep and AD comorbidities such as allergic rhinitis, according to a study.
Pearl Toh, 15 May 2018
Biologic therapy for treating psoriasis, in particular anti-TNF agents, can also help reduce coronary plaque besides suppressing inflammation in the skin, suggests a study presented at the Society for Cardiovascular Angiography and Interventions (SCAI) 2018 Scientific Sessions in San Diego, California, US.
31 Jul 2018
A wound is a disruption of the normal structure and function of the epidermis. Wounds maybe caused by acute traumatic injury to the skin, or other aetiologies that cause initially intact skin to break down. Recently, Dato’ Dr Ho Teik Kok shared his insights into the importance of micronutrients for wound recovery, stressing on the importance of treating the underlying diseases that may impede wound healing.
5 days ago
Patients with psoriasis are at risk of developing serious infection, with the severity of disease predicting greater infection risk, a study suggests.