Simple categories matching prevalent:

• disease,
• state,
• trauma,
• virus,
• condition,
• problem,
• infection,
• pathology,
• std,
• cancer,
• disorder,
• symptom,
• illness,
• difficulty,
• dermatosis,

Members with property prevalent:

• diabetes,
• cancer,
• ear_infection,
• mental_illness,
• symptomatic_bph,
• tuberculosis,
• genital_wart,
• arthritis,
• asthma,
• head_injury,
• epilepsy,
• respiratory_disease,
• peripheral_neuropathy,
• hepatoma,
• atherosclerosis,
• flare,
• autoimmune_disease,
• smallpox,
• gonorrhea,
• hepatitis-c_virus,
• mononucleosis,
• hypertension,
• tetanus,
• parkinsonism,
• back_pain,
• allergy,
• glaucoma,
• depression,
• nasopharyngeal_cancer,
• retinopathy,
• respiratory_infection,
• chlamydia,
• avian_flu,
• cardiovascular_disease,
• melanoma,
• polio,
• gastrointestinal_disease,
• schizophrenia,
• gastroenteritis,
• gonorrhoea,
• nasopharyngeal_carcinoma,
• malignancy,
• atherosclerotic_heart,
• minor_depression,
• osteoporosis,
• vision_impairment,
• leukemia,
• wart,
• tb,
• chronic_bronchitis,
• infertility,
• heart_condition,
• alzheimers,
• hepatitis,
• wound,
• vitiligo,
• bowel_cancer,
• gastric_carcinoma,
• alzheimers_disease,
• prostate_disease,
• hiv,
• common_cancer,
• coronary-artery_disease,
• psoriasis,
• influenza,
• bronchitis,
• fistula,
• small_pox,
• malnutrition,
• alcoholism,
• common_cold,
• nephrolithiasis,
• leprosy,
• metabolic_disorder,
• infection,
• musculoskeletal_condition,
• chicken_pox,
• varicella,
• anxiety,
• multiple_sclerosis,
• arteriosclerosis,
• bipolar_disorder,
• rheumatoid_arthritis,
• herpes,
• osteoarthritis,
• eczema,
• hypothyroidism,
• acute_gastroenteritis,
• pulmonary_emphysema,
• cholera,
• diarrhoeal_disease,
• anemia,
• systemic_hypertension,
• unstable_angina,
• infectious_disease,
• syphilis,
• cataract,
• dengue,
• malaria,
• dysentery,
• preeclampsia,
• hiv_infection,
• cognitive_impairment,
• radiation_exposure,
• chronic_hunger,
• multiple_myeloma,
• dyslexia,
• skin_tumour,
• diarrhea,
• periodontal_disease,
• neck_cancer,
• angina,
• degenerative_disorder,
• typhoid,
• cervical_cancer,
• filariasis,
• pain,
• adjustment_disorder,
• genital_herpes,
• dysthymia,
• parkinson_disease,