The attributes of the skin rash is observed. Whether the rash has ulcers or is scaly, bullous, vesicular, pustular, papular or macular will help ascertain the source of the rash.
- Papular or macular rash – can be the result of a reaction to a drug, pityriasis rosea, exoliative dermatitis, contact dermatitis or eczema.
- Pustular rash – Fungal skin infection, scabies or staphylococcus.
- Bullous or vesicular rash – nummular eczema, impetigo, pemphigus, contact dermatitis, dermatitis herpetiformis