Cutaneous Infections Flashcards
What are the two bacterial cutaneous infections?
1-Impetigo
2-Folliculitis
What are the two viral cutaneous infections?
1-Herpesvirus
2-Molluscum Contagiosum
Bacterial infection in the epidermis is called?
Impetigo
Bacterial infection in the dermis is called?
Cellulitis
Bacterial infection in the appendages of the skin is called?
Folliculitis
Bacterial infection in the fat layer/fascia of skin is called?
Infectious panniculitis/fasciitis
Thin walled vesicles that have dry golden colored crusts commonly on the face, hands, neck or extremities are called what?
Impetigo
*Usually staphylococcal (50-70%), streptococcal or mixed infection. Treated with antibiotic ointment or systemic antibiotic
Inflammation of the hair follicle with dome shaped pustules around the follicle are usually caused by what?
Staph aureus
*treated with antibacterial soap or topical/systemic antibiotics
What are the two main groups of viruses?
1-DNA (herpes, poxvirus, papovirus(warts), infect keratinocytes)
2-RNA (retrovirus (HIV, HTLV) infect CD4+ T-lymphocytes)
What three viral infections are in the epidermis?
1-Molluscum contagiosum
2-Herpesvirus
3-Verruca
What viral infection is in the appendage of the skin?
Folliculitis-herpesvirus
What is a diagnostic test you can use to detect herpesvirus?
Tzanck smear
*Giant mulitnucleated cell with marginized chromatin. 80% sensitive, 90% specific
Which virus is a reactivation of chicken pox, is usually seen in a single dermatome and is usually associated with immunosuppression?
Herpes (varicella) zoster
Associated with epstein-barr virus, what infection occurs mainly in HIV patients and manifests as a whit velvety plaque?
Oral Hairy leukoplakia
*no treatment needed, maybe antiviral therapy
Red, umbilicate papillose caused by poxvirus in young children, sexually active adults or systemic T-cell immunosuppressed patients is typically of what?
Molluscum contagiosum
*transmitted skin-to-skin especially if wet skin. typically resolves on its own in 1-2 years
