Category: Diseases


Health Focus: What is Sundowning Syndrome?

Sundowning syndrome or nocturnal delirium is used to describe a wide range of behaviours of neuropsychiatric (NPS) symptoms that often happen in people with dementia. The behavioural and neuropsychiatric symptoms seen in people with dementia and Alzheimer’s disease include; repetitive behaviours, delusions, misidentification, wandering, suicidal and sociopathic behaviours. Both normal ageing and dementia are associated with changes to the circadian regulation of physiology and behaviour (Cipriani et al., 2015)


An overview of the Clotting process

Hemostasis is a complex process that involves multiple interlinked steps. The aim of the cascade is to form a plug that closes the damaged site of the blood vessels, thereby controlling bleeding. It begins with injury in the lining of the blood vessels. The process can be split into four phases, this includes; constriction of the blood vessels, formation of the temporary platelet plug, activation of the coagulation cascade and formation of the fibrin plug or the final clot. There are numerous cells that are involved in the clotting cascade, most notably are the processes associated with the endothelium, platelets and hepatocytes (LaPelusa & Dave, 2020).


An overview of the types and causes of Edema

Over accumulation of fluid in the interstitial space is generally bad and it affects the proper function of the tissue. This is because the formation of oedema increases the diffusion distance of oxygen and other nutrients. And for the same reason it reduces the diffusional removal of potentially toxic substances of cellular metabolism. This is especially important in the lungs where pulmonary oedema can greatly affect exchange of gasses. Also, certain anatomical structures limit tissue expansion in response to oedema. For example, the kidneys, brain, and the skeletal muscles (Scallan et al., 2010a). This means that small incremental changes in transcapillary fluid filtration will induce a large increase in interstitial fluid pressure.


The sonic hedgehog gene

The sonic hedgehog gene is the human form of the hedgehog superfamily of inductive molecules that play a role in the development of the embryo. Sonic hedgehog is necessary for the development of the front part of the brain. This signaling protein helps to establish the line that separates the right and left side of the forebrain. Sonic hedgehog also plays an important role in the formation of the eyes. During early development the cells that develop into the eye form a single structure called the eye field. The structure is found in the centre of the developing face. Sonic hedgehog signaling causes the eye field to separate into two distinct eyes (National Library of Medicine, 2020

Diseases Health viruses

Origins of the HIV and AIDS Pandemic

The Human Immunodeficiency Virus (HIV) belongs to a family of viruses called the lentiviruses; it is a Retrovirus that causes acquired immunodeficiency syndrome (AIDS), a condition that causes the degeneration of the immune system. This leaves an individual more prone to opportunistic infections and some forms of cancers. HIV/AIDS is transmitted through the contact of infected Blood, semen, vaginal fluid and through breast milk; the most common way that HIV/AIDS is spread through sexual intercourse with an infected person. This paper will look at the history of HIV/AIDS, the distribution, how the HIV/AIDS infects the host and how it targets the immune system (Sharp & Hahn, 2011).

Diseases Health

Communication Challenges in Palliative Care

Palliative care is an approach to care that focuses on improving the quality of life of patients and their families facing the issues that are associated with life-threatening chronic incurable illnesses (Jarrell, 2016). It is important to note that palliative care does not mean end of life care and patients can be on palliative for years before they die (Wallerstedt et al.,