21
Oral thrush, also known as oral candidiasis, is a common
19
Oral cancer is a serious disease that affects thousands
20
Optic Neuritis is a condition that affects the optic
21
Onchocerciasis, also known as river blindness, is a
24
Oculopharyngeal muscular dystrophy (OPMD) is a rare
23
Oculocutaneous albinism is a rare genetic disorder
27
Ochronosis is a rare but serious condition that affects
25
Obesity is a growing concern worldwide, affecting millions
28
Norovirus infection, also known as the stomach flu
28
Nipah virus infection is a highly contagious disease