00:00 / 00:00
Viral structure and functions
Hepatitis B and Hepatitis D virus
Epstein-Barr virus (Infectious mononucleosis)
Herpes simplex virus
Human herpesvirus 6 (Roseola)
Human herpesvirus 8 (Kaposi sarcoma)
Varicella zoster virus
BK virus (Hemorrhagic cystitis)
JC virus (Progressive multifocal leukoencephalopathy)
Poxvirus (Smallpox and Molluscum contagiosum)
Lymphocytic choriomeningitis virus
Hepatitis C virus
West Nile virus
Yellow fever virus
Human parainfluenza viruses
Respiratory syncytial virus
Hepatitis A and Hepatitis E virus
Human T-lymphotropic virus
Eastern and Western equine encephalitis virus
Prions (Spongiform encephalopathy)
0 / 25 complete
0 / 3 complete
Herpes Zoster (Shingles)
Varicella Zoster Virus (VZV)
Varicella Zoster Virus
varicella zoster virus p. 487
guanosine analogs p. 197
immunodeficient patients p. 116
meningitis p. 177
rash p. 178
Reye syndrome p. 397
vaccine p. 108
Varicella zoster virus is one of the herpesviruses and it causes two diseases - varicella or chickenpox, and herpes zoster also known as shingles.
Zoster actually refers to a type of belt used by ancient Greek warriors because of the belt like appearance of shingles.
Now, let’s first talk a bit about the nervous system - it consists of two parts.
The central nervous system which includes the brain and the spinal cord, and the peripheral nervous system includes the nerves that fan out from the central nervous system to reach the skin, muscles, and organs.
Peripheral nerves that originate from the brain are called cranial nerves, and they’re in charge of motor and sensory innervation of the head and neck.
A specific cranial nerve, cranial nerve V, is the trigeminal nerve and it’s responsible for the sensation in the face.
Its sensory neurons create a nerve cell cluster called trigeminal ganglion, located in the bones on the side of the face between the eyes and ears.
The peripheral nerves originating from the spinal cord are called the spinal nerves.
Each nerve is formed by a dorsal and a ventral root.
Ventral roots contains neurons that carry motor innervation from the spinal cord to the muscles.
Sensory information, like touch, temperature, pain, and pressure from the skin and other tissues travel through 1st order sensory neurons, in the dorsal root ganglion near the spinal cord, then through the dorsal root, and into the spinal cord, where it synapses with the 2nd order neurons.
Varicella zoster virus (VZV) is a virus that causes two different diseases, chickenpox (varicella) and shingles (herpes zoster). Chickenpox is a highly contagious disease that primarily affects children, causing an itchy rash, fever, and other symptoms. The virus can be transmitted through direct contact with the rash, as well as through the air. Shingles is a painful condition that occurs when the virus reactivates later in life, usually in older adults or people with weakened immune systems. Shingles typically cause a painful rash, blisters, and other symptoms, and can sometimes lead to long-term nerve pain. The virus is spread through direct contact with the shingles rash. Vaccines are available to help prevent both chickenpox and shingles, and antiviral medications can be used to treat both conditions.
Latest on COVID-19
Nurse Practitioner (NP)
Physician Assistant (PA)
Create custom content
Raise the Line Podcast
Copyright © 2024 Elsevier, its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Cookies are used by this site.
Terms and Conditions
USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.