C hickenpox is a viral infection in which a person develops extremely itchy blisters all over the body it used to be one of the classic childhood diseases. however it has become much less common since the introduction of the chickenpox vaccine. chickenpox is caused by the varicella zoster virus, a member of the herpes virus family. the same virus also causes herpes zoster (singles) in adults. chickenpox can be spread easily to others.We may get chickenpox from touching the fluids from the blister , or if someone with the disease coughs or sneezes near you. even those with mild illness may be contagious. A person  with chickenpox becomes contagious 1 to 2 days before their blisters appear. they remain contagious untill blister have crusted over. Most cases of chickenpox occurs in children younger than 10. the disease is usually mild ,although serious complications sometimes occur adults and older children usually get siker than younger children.  Children whose mothers have had chicke

 It is  the  medical term of the sensation exactly resemble  like crawling of insects under the skin. it is one specific form of a set of sensation known as parasthesias, which also include the more common prickling tingling sensation known as pins and needles, formication is a well documented symptoms which has numerous possible causes.  formication is derived from latin word ant . formication may sometimes be experienced as felling of  itchiness ,tingling,pins,and needles burning or even pain. when formication is percieved as itchiness, it may trigger the scratch reflex and because of this some people who are suffring from the sensation are at risk of causing skin damage through excessive scratching.  in some instance static electricity can attract particulates to the skin and can cause body hair to move giving  a sensation like insects crawling over the skin. how ever in many cases no external trigger creates the sensation. in rare cases ,individuals become convinced that the sensat