Infectious Disease Tutorial
Classic findings of pneumonia (with an open bronchus)
- Inspection-may have reduced thoracic expansion on involved side
- Palpation-increased tactile fremitus and reduced expansion by palpation
- Auscultation-bronchial(tubular)breath sounds, crackles and all of the vocal resonance signs(eg, egophony)are increased.
Increased warmth, edema, and erythema of the skin with ill-defined borders.
Increased warmth, edema, and erythema of the skin with well-defined borders.
Vesicles overlying an erythematous base, in a dermatomal distribution. Hutchinson’s sign- Hutchinson’s sign is the finding of zoster at the tip of the nose, heralding herpes zoster ophthalmicus with the complications of keratitis/uveitis.
The initial cutaneous lesion of blastomycosis is an inflammatory nodule that enlarges and ulcerates, often resembling pyoderma gangrenosum. Lesions evolve to verrucous or crusted plaques with sharply demarcated serpiginous borders.
Characterized by sores that usually start as papules or nodules and evolve into ulcers with raised borders and central crater. The ulcers may be covered by scab or crust.
Tender erythematous or violaceous subcutaneous nodules on the thenar and hypothenar eminences and pulps of fingers and toes.
Nontender erythematous or hemorrhagic macular lesions on the palms and soles.
Retinal hemorrhages with a central pallor, visualized on fundoscopic examination.
Linear brownmarks on the fingernails that resemble wood splinters.
Pain and resistance on extension of the knee starting with the hip and knee flexed at 90 degree with patient in the supine position
Reflex flexion of the hips and knees on passive flexion of the neck with the patient in the supine position.
Meningococcemia is associated with a petechial and purpuric rash.
Circular rash with pale pink center surrounded by raised erythematous borders, appearing on the trunk and extremities.
Painless subcutaneous nodules typically appearing over joints (eg, elbows, knuckles, knees,ankles).
Jerking movements of the face, hands, and feet that are rapid and uncoordinated.
Disseminated gonorrhea is characterized by a syndrome of fever, chills, pustular rash on the trunk and extensor surfaces of the distal extremities, and nonpurulent migratory oligoarticular inflammatory arthritis associated with tenosynovitis.Sometimes the rash is petechial and purpuric rather than pustular.
Primary syphilis is characterized by the presence of a painless genital ulcer that is usually round and firm.
Palms and soles rash
The rash of secondary syphilis is typically a nonpruritic papulosquamous rash often involving the palms and soles, associated with mucocutaneous lesions and generalized lymphadenopathy.
Erythema migrans describes a “target” rash, seen in the early stages of Lyme disease at the site of the tick bite.