Sickle Cell Disease: Epidemiology

Sickle Cell Disease (SCD) is a rare blood disorder that affects the hemoglobin involved in delivers oxygen to cells throughout the body. It is inherited in an autosomal recessive trait in which both copies of the genes present in each cell have mutations. The parents of an individual with an autosomal recessive condition comprised of one copy of the mutated gene, and do not show signs and symptoms of the condition. The atypical hemoglobin molecules called hemoglobin S are present among the patients. Sickle cell disease is characterized by the presence of sickle or crescent-shaped, red blood cells in the bloodstream. Sickle Cell Disease occurred due to the mutations in the hemoglobin beta (HBB) gene.

Sickle Cell Disease Epidemiology Insights

  • The United States accounts for the highest prevalent cases of Sickle cell disease followed by the EU5 countries (France, Germany, Spain, Italy, and the United States), and Japan
  • According to the Centers for Disease Control and Prevention (CDC), Sickle Cell Disease affects approximately 100,000 Americans
  • Sickle Cell Disease occurs among about 1 out of every 365 Black or African-American births
  • Sickle Cell Disease occurs among about 1 out of every 16,300 Hispanic-American births
  • Approximately, 1 in 13 Black or African-American babies is born with sickle cell trait (SCT).
  • The mutations in the HBB gene are common in people from African, Mediterranean, Middle Eastern, and Indian ancestry and in people from the Caribbean and parts of Central and South America, but can be found in people of any ethnicity

World Vitiligo Day

Every year June 25 is celebrated as the World Vitiligo Day to raise awareness regarding Vitiligo, fight prejudice, and raise funds for research, support & education. The aim of this day is to include the recognition of the bullying, social neglect, psychological trauma, and disability of millions of people affected by vitiligo. The primary purpose of this day is to raise money for research, give free skin exams, and educate physicians on how to best take care of patients with vitiligo.

Vitiligo is the long term skin condition in which the skin loses the pigment i.e. melanin, essential for determining the color of skin, hair, and eyes. This leads to the slow growth of the white patches of irregular shapes on the skin. Vitiligo can also affect the mucous membranes, including tissues inside the mouth and nose. It can affect people of all skin types but is generally noticeable much in darker skin people.

Vitiligo Facts

  • Around 1 out of 10 people i.e. 1-2% of people are suffering from Vitiligo worldwide
  • The United States accounts for the highest prevalent cases of Vitiligo in comparison to the EU5 (Germany, France, Spain, Italy, and the United Kingdom) and Japan
  • Vitiligo is classified as the non-segmental, and segmental Vitiligo. Non-segmental Vitiligo is most prevalent in comparison to the segmental Vitiligo
  • Approximately, 95% of the people develop the condition prior to age 40.
  • Around 20% of people have a family member suffering from Vitiligo
  • Males and females are almost equally affected by Vitiligo
  • Vitiligo is sometimes associated with certain other medical conditions, including thyroid dysfunction, diabetes mellitus, Addison’s disease, etc.
  • Several factors such as autoimmune disease, genetic factors, sunburn or any cut, oxidative stress, neurochemicals, and exposure to the industrial chemicals increase the risk of developing Vitiligo