Conditions associated with multiple dermatofibromas include:        
Pregnancy Chromosomal alterations (Down syndrome) Metabolic disorders (hypertriglyceridemia) Hematologic malignancies Immunodeficient diseases (HIV) Autoimmune diseases (myasthenia gravis, pemphigus vulgaris, and systemic lupus erythematosus)
What is the underlying mechanism of dermatofibroma?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What is the underlying mechanism of dermatofibroma? [/INST] \n Conditions associated with multiple dermatofibromas include:        
Pregnancy Chromosomal alterations (Down syndrome) Metabolic disorders (hypertriglyceridemia) Hematologic malignancies Immunodeficient diseases (HIV) Autoimmune diseases (myasthenia gravis, pemphigus vulgaris, and systemic lupus erythematosus)</s>