Treatments and drugs. Most cases of hiccups go away on their own without medical treatment. If an underlying medical condition is causing your hiccups, treatment of that illness may eliminate the hiccups. The following treatments may be considered for hiccups that have lasted longer than two days.
Poetry that overtly uses the effects of metre, rhyme and form, especially the fixed forms (sonnets, villanelles etc) is known as formal verse.
But there is a long tradition of formal/traditional poetry that doesn't rhyme. Formal poetry does not require rhyme. The dominant gene of formal poetry is meter. The most common type of unrhymed meter in formal poetry is blank verse.