When we speak of diseases, regular lifestyle diseases like hypertension, diabetes, migraine or even chronic ones like cancer and stroke come to our mind. Apart from these, several rare diseases in the world have been causing several health complications and even deaths for years now. Let us look into some of these rare diseases and find out what makes them so unique that most of us have not even about them.

Sickness is a condition where our body feels weak and is unable to carry out basic functions smoothly. Cold, viral infection, cough, and general weakness are all forms of sickness caused due to viral infection, climatic changes, or changes within the body. Continuous weakness, fatigue, and irritated behaviour are some of the common tendencies exhibited by patient when they fall sick. These symptoms might range from a couple of days to even weeks depending on the severity of the situation.

High blood pressure is a condition in which blood pushes too hard against artery walls. Also known as hypertension, this condition apart from damaging the arteries can also lead to several health complications. The heart of a person suffering from hypertension will have to work much harder to pump blood due to increased blood circulation speed. Hypertension is measured in millimeters of mercury (mm Hg). A value of 130/80 mm Hg or greater is generally considered to be hypertension.

Cancer is the uncontrolled spread of cells throughout the body. Also known as malignant cells, or tumor cells, these cells invade healthy body tissues and impact their functioning. Usually, body cells divide to create new cells to replace outdated or damaged cells. In the case of Cancer, new cells continue to divide rapidly even when they are not required and form tumors.

One of the biggest endocrine glands, the thyroid gland affects almost every cell in the human body. It is responsible for the regulation of metabolism and weight by controlling the fat-burning process. Apart from this, thyroid hormones are also required for the growth and development of children and in nearly every physiological process in the body. The thyroid gland is a butterfly-shaped gland found inside the neck, right under the larynx or voice box.

Myocardial Infarction (MI), also known as a heart attack, happens when oxygen-rich blood fails to reach your heart due to artery blockage. The lack of blood in the heart causes the tissues to lose oxygen and eventually die. Heart attack is a critical condition that causes millions of deaths worldwide and in several situations hampers our body functioning as well. Obstructed blood flow can result in the accumulation of fluids in our lungs and create severe complications.

Cervical cancer is a kind of cancer that develops in the lower portion of the uterus that attaches to the vagina or the cervix. The development of cancer cells in this region leads to severe complications and cells can metastasize to other regions of the body. Human papillomavirus (HPV) and its strains are some of the primary reasons for the development of cervical cancer.

Brain stroke is a potentially fatal condition that develops due to insufficient blood flow to areas of the brain. Brain stroke usually occurs due to either bleeding in the brain or a blocked artery. The brain cells in that location start to die from a lack of oxygen when there isn't a constant flow of blood. A brain stroke can happen across ages but some people are more at risk than others. Strokes are more prevalent as people age (about two-thirds of strokes happen in people over 65).