Razi Brown Trachoma is a disease of the eyes that causes the inflammation of eyes known as Kerato-conjunctivitis (the eyes become red and painful) that leads to blindness when not treated. Trachoma was initially called Egyptian ophthalmia; it is the leading cause of preventable blindness in the world. Trachoma is caused by an organism …
River Blindness is also known as Onchocerciasis and it is an infectious disease caused by Onchocerca volvulus which is transmitted by Black fly of the genus Similium (example is Simulium damnosum) which is the vector; this disease is an important cause of blindness in Africa and its ocular features include sclerosing keratitis, uveitis, chorioretinitis and optic neuritis …
Yaws is a contagious disease caused by Treponema pertenue and it is the most common endemic treponemal disease worldwide. Yaws are also called Framboesia in German and Pian in French. Yaws have been eradicated by World Health Organization (WHO) but they are reappearing. The clinical course of Yaws is difficult to differentiate from that of syphilis. Yaws incubation …
Pott Disease or Potts Disease (Spinal TB, or TB Spine) is the commonest form of joint and bone tuberculosis in West Africa and children and old age is a risk factor to having TB Spine (that is, extremes of ages predispose to having tuberculosis of the spine). TB spine is a form …
What is Miliary Tuberculosis? Miliary tuberculosis is a form of Disseminated TB or Extrapulmonary TB that is caused by sudden diffuse dissemination of tubercle bacilli through the bloodstream (hematogenous spread of TB). Miliary Tuberculosis mainly occurs in children and young adults but may also occur in older people and it is insidious …
Extrapulmonary Tuberculosis is a type of Tuberculosis that occurs outside of the lungs. It is called Extrapulmonary Tuberculosis (EPTB) because the most common organ of the body affected by Tuberculosis is the lungs. Tuberculosis is a multi-systemic disease (it affects many organs of the body) caused by Mycobacterium Tuberculosis (M. Tuberculosis). It may occur …
Spatial interactions include different types of movements such as travel, migration, transmission of information, journeys to work or shopping, retailing activities, or freight distribution. Our knowledge about spatial interaction can be generally or highly particularistic (specific). Normally, it seems easy to state why a particular movement takes place: the heart of a …
What is Bronchiectasis? Bronchiectasis is abnormal and permanent dilatation of the bronchi. The trachea divides into two to give rise to bronchi. These bronchi become increased in sized (dilated) in Bronchiectasis. When the bronchi become dilated (widened), they cause chronic and recurrent infections of the airways and secretions pool within it. Bronchiectasis …