Infectious Myositis of the Left Foot in a Healthy Adult Male

We report the case of a 37-year-old male who presented with non-traumatic pain and swelling of the left foot, initially managed as cellulitis with oral antibiotics. Due to progressive symptoms and rising inflammatory markers, he was admitted for further evaluation. MRI confirmed infectious myositis involving the deep intrinsic muscles of the foot, without abscess or necrotizing fasciitis. He responded well to intravenous and subsequently oral antibiotics, avoiding surgical intervention. This case underscores the need for early imaging in atypical or non-resolving limb infections and highlights the multidisciplinary approach in managing deep soft tissue infections.