- bacillary angiomatosis [DOID:0060345]
A bartonellosis that has_material_basis_in Bartonella henselae or has_material_basis_in Bartonella quintana. The disease is characterized by the proliferation of blood vessels, resulting in them forming tumour-like masses in the skin and other organs.
- trench fever [DOID:11101]
A primary bacterial infectious disease that results in systemic infection, has_material_basis_in Bartonella quintana, which is transmitted by body lice (Pediculus humanus corporis). The infection has symptom relapsing fever, has symptom headache, has symptom shin pain, and has symptom soreness of the muscles of the legs and back.
- selective IgM deficiency disease [DOID:0050222]
A selective immunoglobulin deficiency disease thatis a dysgammaglobulinemia resulting from decreased levels of immunoglobulin M (IgM) production to roduction of other antibodies.
- androgenic alopecia [DOID:0050801]
An alopecia that is characterized by M-shaped hair line recession and thinning of hair at the crown of the head in males.
- lymphoplasmacytic lymphoma [DOID:0060901]
A B-cell lymphoma characterized by the accumulation of monoclonal cells in the bone marrow and peripheral lymphoid tissues, and associated with the production of serum immunoglobulin M (IgM) monoclonal protein.
- CD40 ligand deficiency [DOID:0060022]
A combined T cell and B cell immunodeficiency that is a X-linked immunodeficiency with hyperimmunoglobulin M (XHIM) affecting isotype switching and is caused by the absence of CD40 ligand which is normally expressed on activated CD4+ T cells. Individuals with this mutation are unable to switch from IgM to IgG, IgA and IgE.