B-Cell Lymphomas
Babesiosis
Bacterial Meningitis
Bacterial Pneumonia
Balantidiasis
Baller-Gerold Syndrome
Bannayan-Riley-Ruvalcaba Syndrome
Bannayan-Zonana (BZS)
Bantil's Syndrome
Bardet-Biedi Syndrome
Barrett Syndrome
Barth Syndrome
Bartonellosis
Bartter's Syndrome
Battan Turner Muscular Dystrophy
Batten Disease
Beal's Syndrome
Becker's Muscular Dystrophy
Beckers Nevus
Beckwith-Wiedmann Syndrome
Behcets Syndrome
Bejel
Bell's Palsy
Benign Astrocytoma
Benign Paroxysmal Positional Vertigo
Bernard-Soulier Syndrome
Beryliosis
Binswanger's Disease
Bjornstadi
Bladder Cancer
Blastoma
Blastomycosis
Blepharophimosis
Blindness
Bloom Syndrome
Blue Diaper Syndrome
Bone Marrow Transplant
"BOO" Pneumonia
Borjeson Syndrome
Botulism
Bowen Hutterrite
Bowenoid Papulosis
Bradykinesia
Brain Cancer
Brain Tumor
Branch-Oculo-Facial Syndrome
Branchio-Oto-Renal Syndrome
Breast Neoplasm
Brown Syndrome
Brown-Sequard Syndrome
Bryant's Syndrome
Budd-Chiari Syndrome
Bulima
Bulima Nervosa
Burning Mouth Syndrome