"a severe relationship" is a correct and usable phrase in written English.
It can be used when referring to a close connection, usually between two people, which involves difficulty or strong negative emotions. For example: "The couple had a severe relationship, filled with fights and misunderstandings."
For each AE, investigators recorded the severity (mild, moderate, and severe), relationship to the study product (unrelated or unlikely, possibly, probably, or definitely related), and treatments for each event.
All adverse experience reports must include the patient number, severity of reaction (mild, moderate, severe), relationship to study drug (probably related, unknown relationship, definitely not related), date and time of administration of test medications and all concomitant medications, and medical treatment provided.
Mellow parenting is an intensive programme for families with severe relationship problems.
The MPOS was originally developed for families where there were severe relationship problems and around 25% of participating families had a child on the Child Protection Register [ 41, 42].
Demographic information collected included: age, sex, English as a first language, international student status, previous degrees, housing, physical or mental illness, financial stress, and a measure of recent (previous 6 months) adverse life events (e.g. illness, bereavement, severe relationship problems) based on the Brief Life Event Questionnaire BLEQQ)[ 16].
Yet the re-emergence of divisive issues and finally the downing of a Russian SU-24 fighter jet by Turkey after it violated Turkish airspace, and Putin's interpretation of the incident as a "stab in the back that will have a serious consequences for Russia's relationship with Turkey" mark a severe revision of this friendly relationship.
Servante's illness has had a severe impact on his relationships with the opposite sex.
The transatlantic relationship took a severe battering in 2003 when the United States invaded Iraq.
Profanity can negatively impact office morale, and directing it at a coworker can put a severe strain on a work relationship.
The anguish over college debt has put a severe strain on many family relationships.
