Related by context. Frequent words. (Click for all words.) 71 mononucleosis 68 stomach bug 63 viral infection 58 bronchitis 56 rib injury 55 knee injury 55 Achilles injury 54 thigh injury 53 illness 53 hamstring injury 53 strep throat 53 thigh strain 53 calf injury 52 ankle injury 52 gastroenteritis 52 chicken pox 52 dislocated shoulder 51 tendinitis 51 groin injury 50 calf strain 49 groin strain 49 stress fracture 48 niggling 48 mumps 48 ear infection 48 ailment 48 nagging injuries 48 cruciate ligament 48 knee surgery 48 hamstring strain 48 broken collarbone 48 Achilles tendon injury 48 sore throat 48 sore shoulder 47 appendicitis 47 injury 47 bacterial infection 47 chickenpox 46 muscle strain 46 niggles 46 staph infection 45 sprained ankle 45 abdominal strain 45 herniated disc 45 calf muscle 45 respiratory illness 45 virus 45 flu 45 strained hamstring 45 thigh muscle 44 testicular cancer 44 knee ligament 44 stress fractures 44 concussion 44 mild concussion 44 ankle sprain 43 torn ACL 43 vertigo 43 plantar fasciitis 43 ligament damage 43 soreness 43 leukemia 43 flulike symptoms 43 pneumonia 42 sore elbow 42 torn ligament 42 Lyme disease 42 sports hernia 42 encephalitis 42 sore groin 42 influenza 42 Hodgkin lymphoma 42 flu virus 42 hernia 42 strained groin 42 tiredness 42 stiff neck 42 hamstring 42 turf toe 42 infection 41 torn anterior cruciate ligament 41 broken rib 41 strained muscle 41 sickness 41 hip flexor 41 sore hamstring 41 bacterial meningitis 41 H#N# virus 41 upper respiratory 40 knee 40 knee sprain 40 jaundice 40 ligament 40 sprain 40 Illness 40 collar bone 40 brain tumor 40 tendon 40 Achilles tendon 40 physio 39 meningitis