Read this! ⬇️⬇️⬇️ Medical names for diseases are uncountable. ✅ Zero Article with names of diseases and medical conditions Example: My niece has appendicitis. ✅ Zero Article or with THE before traditional diseases such as flu, measles, chickenpox, and mumps. (They are usually preceded by THE.) Examples: I have flu. I have the flu. (more common) ✅ A/An with symptoms of diseases such as allergies, colds, fevers, headaches, sore throats, and toothache. Examples: I have a sore throat. I have a heada