Final answer:
Blanching erythema from superficial dermal/epidermal infection, usually caused by streptococci, can be seen in conditions such as cellulitis, erysipelas, and erythema nodosum. Treatment typically involves antibiotics and other supportive measures. Proper diagnosis through laboratory tests is crucial for determining the most effective antibiotic treatment.
Step-by-step explanation:
Blanching erythema from superficial dermal/epidermal infection, usually caused by streptococci, can be seen in conditions such as cellulitis, erysipelas, and erythema nodosum. Cellulitis presents as a warm, painful, and reddened area of the skin, while erysipelas appears as a large, intensely inflamed patch of skin. On the other hand, erythema nodosum is characterized by red nodules on the skin, commonly found on the shins.
Treatment for these superficial streptococcal infections typically involves the administration of antibiotics based on the susceptibility of the specific pathogen. Penicillin is commonly prescribed for cellulitis and erysipelas, as resistance is not widespread among streptococci. Nonsteroidal anti-inflammatory drugs (NSAIDs), cool wet compresses, elevation, and bed rest may also be recommended. It is important to accurately diagnose the infection through laboratory tests to determine the best course of antibiotic treatment.