Scabies Scabies (Itch mite or Sarcoptes scabiei)Scabies is caused by itch mite or Sarcoptes scabiei.Transmission to man is through transfer of impregnatedfemale mites through— (1) skin-to-skin contact with an infested person, or (2) rarely spread indirectly by sharing their items such as clothing, towels, or bedding. Scabies can spread easily under crowded conditions where close […]

Human bites

A Human Bite

Human Bites Human bites may take place during fights, domestic abuse,sexual activity or healthcare workers caring for patients.Human-bite wounds become infected less frequently(10–15% of the time) than the bites inflicted by animals Types of human bites: Human bites are categorized intotwo types ●Occlusional injuries, which are inflicted by actual biting ● Clenched-fist injuries: Occurs during […]



MUMPS Mumps virus is the most common cause of parotid glandenlargement in children. In severe cases, it can also causeorchitis and aseptic meningitis. Pathogenesis Transmission is through the respiratory route viadroplets, saliva, and fomites Primary replication occurs in the nasal mucosa orupper respiratory mucosa → infects mononuclear cellsand regional lymph nodes → spills over to […]


Corneal Ulcer ( Keratitis)

Corneal Ulcer (Bacterial Keratitis) Bacterial keratitis is the most common form keratitis(corneal ulcer), although it may also be caused by viruses,parasites and fungi. Etiology: Common bacteria associated with cornealulceration include S. aureus, Pseudomonas, Streptococcuspneumoniae, Enterobacteriaceae and NeisseriaTransmission: Infection spreads to cornea either —(1)endogenously from underlying infection of adjacentstructures—conjunctiva, eyelid or lacrimal gland; or (2)exogenously from […]


Hordeolum Hordeolum is an acute focal infection of eyelid (lash follicles), usuallycaused by Staphylococcus aureus. Risk factor: It usually occurs among children and youngadults with habitual rubbing of the eyes Two types: It is an acute suppurative inflammation oflash follicles and its associated glands

Decubitus Ulcer

Decubitus Ulcer

Decubitus Ulcer Elderly or chronically ill, bedridden patients are prone todevelop decubitus ulcer (also called as bed sore or pressuresore); the most common site being near the anus or onthe lower extremities. Most frequent organisms infect thedecubitus ulcer are gastrointestinal flora (e.g. Bacteroides fragilis, or nosocomial pathogens (e.g. S. aureus and P.aeruginosa).