Tag: categories of diseases

• Hay fever is an allergic reaction caused by pollen dust or indoor allergens.
  
• Such allergens cause the inflammation of the mucous membranes of the eyes and nose.
• The main symptoms include a runny nose and watery eyes.
• So, the correct answer is 'True'.

Genus Alexandreum of dinoflagellates secretes neurotoxin saxitoxins which are the causative agents of paralytic shellfish poisoning (PSP). Molluscs such as mussels and clams feed on a large number of dinoflagellates, human consumption of those molluscs causes paralysis. 

The causative agent of mad-cow disease is a prion. Bovine spongiform encephalopathy (BSE), commonly known as mad cow disease, is a fatal neurodegenerative disease or encephalopathy in cattle that causes a spongy degeneration in the brain and spinal cord. It is caused due to a prion. A prion is an infectious agent, specifically a protein in a misfolded form. The protein itself, whether in its misfolded or its correctly folded form, can be referred to as the prion protein (PrP). A protein as an infectious agent stands in contrast to all other known infectious agents, like viruses, bacteria, fungi, or parasitesall of which must contain nucleic acids.

Leukaemia is blood cancer.
Polycythemia is an abnormally increased concentration of hemoglobin in the blood.
Tay-sachs disease is hexosaminidase A deficiency.
Leucopenia is a reduction in the number of white blood cells (leucocytes) caused by the deficiency of folic acid.
Therefore, the correct answer is option B.

AIDS is caused by HIV virus and transmits sexually.
Jacob syndrome is characterized by an extra copy of Y chromosome in a male. Thalassemia is an inherited autosomal recessive blood disorder characterized by abnormal formation of hemoglobin. Whereas asthma is a respiratory condition caused by attacks of spasm in the bronchi of the lungs, causing difficulty in breathing. One of its cause is coming in contact with some air-borne allergens or exposure to some viral infections in infancy or in early childhood when the immune system is developing.
Thus, the correct answer is option B.

Antibiotics are used against bacterial diseases and malaria is a protozoan disease.

The severity of the disease manifestations depends on the number of microbes present in the body. Smaller is the number of microbes in the body, lesser are the symptoms of a disease. On the contrary, if microbe exists in large number in the body, disease can be severe and life-risking.

Common cold spreads through the mucus of the infected people during sneezing and coughing.

A non-communicable disease (NCD) is a disease that is not transmissible directly from one person to another. Communicable diseases are infectious.