Dr. David T Fisk MD

Cold sores are small, painful blisters that form on the lips or skin around the nose, mouth, or chin. Also called as herpes labialis and fever blisters, cold sores are caused by a herpes simplex virus (HSV) infection. It usually begins in childhood or young adulthood and continues to persist...

What is HIV?HIV is a virus that was discovered in the 1980s. It attacks a person's immune system, causing it to be too weak to fight outside infections. The HIV virus works by destroying white blood cells, called CD4 cells, in the immune system, and progresses through three stages, the last of which...

Meningitis occurs when the meninges, the protective membranes surrounding the brain and spinal cord, get inflamed or irritated. Meningitis is an outcome of certain bacteria or viruses entering the body when our immune system is weak.These bacteria and viruses live in the nose, throat, or the...

Dengue fever, a viral infection spread by the Aedes Aegypti mosquito, which causes acute body pain, raging fever and a slew of rashes and spots covering the body, but rarely progresses far enough to claim lives. Fatalities only occur when typical dengue develops into more serious conditions such as...

Introduction Chikungunya is a viral infection that is transmitted by mosquitoes. The chikungunya virus causes a sudden onset of fever along with severe joint pain. The illness is not considered as contagious, but in rare instances, the virus can get transmitted through contact with a person's...

The normal body temperature of a human being is 37° C. However, it may change throughout the day due to several factors. When the body’s temperature is elevated, it is described as a fever. Unlike the standard body temperature, a fever is not a constant temperature. In some instances,...