Related by context. Frequent words. (Click for all words.) 72 illnesses 71 ailment 68 sickness 63 pneumonia 63 respiratory illness 62 Illness 62 viral infection 60 disease 58 bacterial infection 58 mononucleosis 58 chronic illness 57 infection 57 injury 57 bronchitis 56 hospitalization 56 gastroenteritis 55 ailments 55 meningitis 54 bacterial meningitis 53 cancer 53 chicken pox 53 staph infection 53 affliction 53 flulike symptoms 53 strep throat 53 malady 53 flu 51 liver disease 51 leukemia 51 symptoms 50 absences 50 influenza 49 sore throat 49 lung disease 49 kidney disease 49 brain tumor 49 lung cancer 49 kidney failure 49 lymphoma 49 injuries 49 encephalitis 48 ankle injury 48 seriously ill 48 norovirus 48 emphysema 48 diseases 48 complications 48 pancreatic cancer 48 knee injury 48 rib injury 48 tuberculosis 48 mumps 47 H#N# virus 47 chronic diseases 47 Achilles injury 47 maladies 47 chronic illnesses 47 colon cancer 47 Lyme disease 47 appendicitis 47 swine flu 46 sick 46 virus 46 Alzheimer disease 46 diagnosis 46 mental illness 46 outbreak 46 thyroid cancer 46 disability 46 poisoning 46 nagging injuries 46 whooping cough 46 concussion 45 liver cancer 45 ill 45 groin injury 45 thigh injury 45 Lou Gehrig disease 45 treatable 45 dementia 45 gravely ill 45 dehydration 45 diagnosed 44 infections 44 hamstring injury 44 bereavement 44 pertussis 44 testicular cancer 44 highly contagious 44 brain hemorrhage 44 calf injury 44 dengue fever 44 cervical cancer 43 eating disorder 43 irregular heartbeat 43 colds 43 unwell 43 breathing difficulties 43 measles 43 renal failure 43 allergic reaction