Patient has Streptococcus skin infection reaching subcutaneous fat. Diagnosis?

Correct option is A

Cellulitis is a deep bacterial infection extending into the subcutaneous tissue, typically caused by Streptococcus or Staphylococcus species. Explanation of options:
· (a) ✔ Characterized by red, warm, swollen skin, often with pain.
· (b) ✘ Impetigo is superficial, not involving deeper tissues.
· (c) ✘ Psoriasis is autoimmune and non-infectious.
· (d) ✘ Eczema is inflammatory but not infectious.