dermatofibroma – MySymptom

Why do I get a tiny hard lump directly after getting a mosquito bite on my arm?

1. Introduction The tiny hard lump that forms directly after a mosquito bite is a localized immunological response characterized by intense inflammation and the rapid accumulation of white blood cells at the puncture site. The mosquito injects salivary proteins into the dermis, prompting mast cells to release histamine, which triggers localized tissue swelling and cellular … Read more

Fibrous Histiocytoma of the Skin: Diagnosis, Characteristics, and Removal

1. Introduction A fibrous histiocytoma of the skin, universally known in clinical dermatology as a dermatofibroma, is an exceptionally common, strictly benign cutaneous nodule. These firm, localized growths develop deep within the dermal layer of the skin and are characterized by the excessive, localized proliferation of fibroblasts (the cells that produce connective tissue) and histiocytes … Read more