dermatology

Question 1

Herpes Zoster

Answer 1

Pain generally precedes skin manifestation 3-5 days, and localised to the dermatome that will be affected
Malaise, fever, headache often present
Initial rash consists of erythematous maculopapules situated on a single dermatome
DDx from herpes simplex – usually only a single patch of equally sized vesicles
Vesicles subsequently become umbilicated, form crusts and generally fall off after 3 weeks; scarring
Pain during and after rash is significant
Secondary infections (staph)
Regional lymphadenopathy
Trigeminal nerve can cause painful ear, vesicles on pinna and external auditory canal (Ramsay Hunt Syndrome)

Question 2

Atopic eczema signs and symptoms

Answer 2

Dry skin, child scratches, breaks epidermal barriers, infection
Dietary allergens can cause outbreak if sensitive to them
Seborrheic dermatitis has similar features, but appears on the scalp , with more scaling, looks yellow and greasy, “cradle cap”, early infancy

Question 3

Erythema Multiforme signs and symptoms

Answer 3

Long, tender red patches over the shins may accompany infection or inflammation
Usually resolve by themselves
May also occur secondary to drug sensitivity
Appear in crops, and are accompanied by:
fever, arthralgia and malaise
Common infectious agents are strep and mycoplasma

Question 4

Impetigo signs and symptoms

Answer 4

Golden crusts – caused by staph or strep
Rapid spread by auto-inoculation caused by scratching and rubbing highly contagious

Question 5

Herpes Simplex

Answer 5

Can cause febrile illness in a minority with gingivostomatitis
Painful ulceration of buccal mucosa with erosion and haemorrhage
Dehydration may occur d/t difficulty swallowing – may also have thick secretions in the mouth
Treat severe cases with aciclovir
could sours around mouth

Question 6

Rubella signs and symptoms

Answer 6

Mostly asymptomatic, but can cause serious complications is a pregnant mother contracts the virus

Associated Symptoms
Headache
Fever
Cough
Sneezing & runny nose
Sore Throat
Sore red eyes

Question 7

Roseola Infantum

Answer 7

Very Common infection that mainly affects babies & toddlers.

Symptoms:
High Temp & rash
- Rash starts on the stomach / chest usually.
- Non itchy

Usually recover within a week.