An intramuscular (IM) injection is one of the common routes for administering drugs, commonly analgesics and vaccines. Nicolau syndrome refers to the rapid-onset painful, extensive cutaneous discoloration progressing to necrosis and ulceration, reported after IM injections. This case report highlights a rare but avoidable complication of such injections. An elderly man presented with extensive cutaneous necrosis and discoloration over the buttocks extending to the thigh, within few days after receiving a single shot of IM injection of diclofenac. Management involved wound care, biopsy, and cultures with supportive antibiotics to control superadded infection. After multiple sittings of extensive surgical debridement, the wound showed signs of healing and was ultimately amicable for skin grafting in a month.Health care workers need sensitization toward such a complication that can occur out of a routine procedure like an IM injection. They should follow standard IM injections techniques and take precautions to avoid this mishap, which adds to the patient's morbidity.

Gastrointestinal basidiobolomycosis (GIB) is a rare fungal infection with limited geographic distribution. However, the incidence of GIB has shown an increasing trend because of globalization and frequent traveling. GIB is commonly seen to mimic gastrointestinal malignancy and other diseases such as intestinal tuberculosis and inflammatory bowel disease. Tissue diagnosis is considered to be the gold standard for differentiating these mycotic lesions from tuberculosis and malignancy with confirmation of species performed by culture or polymerase chain reaction. The diagnosis of GIB should be conjectured in patients with suspicion of malignancy, with an inconclusive biopsy. It seems prudent to proceed with radical excision of mass early because both colonic malignancy and GIB have high mortality if untreated.