Table 1 Causes of Sweet's syndrome

Hematopeitic: myelodysplastic syndromes and acute myeloid leukemia, hairy cell leukemia, B and T cell lymphoma, agnogenic myeloid metaplasia

Solid tumors: breast, testicular, prostate, ovarian, vaginal squamous cell, genitourinary and gastrointestinal malignancies

Viral infections

Chronic active hepatitis, cytomegalovirus, human immunodeficiency virus

Bacterial infections

Streptococcus, mycobacterium, yersinia, typhus, salmonella

Autoimmune and collagen vascular diseases

Rheumatoid arthritis, systemic lupus erythematosus, mixed connective tissue disease, hashimoto thyroiditis, Sjogren's disease, behcet's disease

Medications

Furosemide, hydralazine, lithium, oral contraceptive pills, trimethoprim- sulfamethoxazole, minocycline and imatinib mesylate

Inflammatory bowel disease

Ulcerative Colitis, Crohn's disease

Pregnancy

Complement deficiency

Subacute necrotizing lymhadenitis

POEMS syndrome