This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Skin
Prescence erythema nodosum indicates: 
Select and explain. 
A. Tuberculosis, B. sarcoidosis, C. Malignancies, D. all the above
D: all the above
Answer: D: all the above 
Explanation: Ans D (all the above) Ref IADVL Dermatology Pg 1203 T 35.4Causes of erythema nodosumBacterial - streptococcal infections,tuberculosis,mycoplasma,LGV,salmonella,leptospirosis,CampylobacterFungal -histoplasmosis,blastomycosis,coccidiodomycosisParasitic-toxoplasmaViral -hep BDrugs- sulfonamide,bromides,iodides,sulfonylureas,OCP.Malignancies-HL,NHL,AMLSarcoidosis, inflammatory bowel disease