severe maternal severe measures severe medical severe memory severe menstrual severe mental severe mental disorders severe mental health severe mental illness severe mental retardation severe migraine severe mood severe muscle severe natural severe nausea severe neck severe negative severe neurological severe neutropenia severe obesity severe one severe or chronic severe or persistent severe outbreak severe pain severe panic severe penalties severe penalty severe periodontal severe persecution severe personal severe personality severe physical severe pneumonia severe political severe pollution severe poverty severe preeclampsia severe pressure severe problem severe problems severe psoriasis severe psychiatric severe psychological severe pulmonary severe punishment severe punishments severe radiation severe rash severe reaction severe reactions severe recession severe reduction severe renal severe renal impairment severe renal insufficiency severe repercussions severe reprimand severe respiratory severe restrictions severe rheumatoid severe risk severe sanctions severe sentences severe sepsis severe setback severe shock severe shortage severe shortages severe side severe side effects severe signs severe skin severe skin reactions severe sleep severe social severe spinal severe stomach severe stomach pain severe storm severe storms severe strain severe stress severe stroke severe structural severe sunburn severe swelling severe symptoms severe test severe threat severe threats severe thunderstorm severe thunderstorms severe torment severe torture severe toxicity severe traffic severe trauma severe traumatic brain