Blood, hematopoietic organs-immune system (D50-D90).
- Sarcoidosis (synonyms: Boeck’s disease; Schaumann-Besnier’s disease) – systemic disease of connective tissue with granuloma formation (skin, lungs, and lymph nodes).
- Nonspecific reactive lymphadenopathy (lymph node enlargement).
Skin and subcutaneous (L00-L99) [differential diagnoses due to primary cutaneous lymphoma].
- Neurodermatitis (atopic eczema).
- Pityriasis lichenoides – usually chronic skin disease for which small-spotted papules (nodule-like change on skin or mucous membrane) are characteristic
- Psoriasiform dermatitis – a psoriasis resembling eczematous inflammatory reaction of the dermis (dermis).
Infectious and parasitic diseases (A00-B99).
- EBV infection – infection with Epstein-Barr virus.
- HIV infection
- Toxoplasmosis – infection with Toxoplasma gondii, which belongs to the protozoa.
- Tuberculosis (consumption)
Neoplasms – tumor diseases (C00-D48)
- Metastases (daughter tumors) of solid tumors, unspecified.
