Final answer:
The discussed symptoms may indicate a severe bacterial or viral infection manifesting as skin irritation with systemic effects. Cellulitis, or potentially cutaneous anthrax, could present with such symptoms. A professional medical evaluation is necessary.
Step-by-step explanation:
The symptoms presented in the question, such as fever, chills, headache, joint pain, and the presence of an erythematous and edematous plaque with sharply defined edges that may develop overlying blisters (bullae), followed by a high WBC count and occurring on the face, potentially describe a severe bacterial or viral infection which could be of a number of differing medical diagnoses, depending on additional clinical features and epidemiologic context. The high WBC count suggests the body is fighting a significant infection. Given the variety of symptoms that can accompany fever and skin manifestations, professional medical evaluation is necessary for a definitive diagnosis and appropriate treatment.
Some of the possible conditions that could be associated with these symptoms include cellulitis, which is typically a bacterial infection of the skin that becomes red, swollen, and tender. In severe cases of skin infection, symptoms may progress to form blisters, and systemic symptoms such as fever and high WBC counts can be observed. Alternatively, these symptoms can be indicative of cutaneous anthrax, which also presents with edematous and erythematous plaques, often with vesicles or bullae that can become necrotic and ulcerate, typically occurring after exposure to infected animals or contaminated animal products.