monomanias

Example:Her love for collecting rare books was becoming an obsession that consumed much of her free time.

Definition:A persistent and unhealthy preoccupation with an idea or person. A state of being dominated by such a preoccupation.

Example:His mania for acquiring antique furniture left his house in disarray and his finances in ruin.

Definition:A state of intense excitement, usually accompanied by loss of control and/or rationality. A period of abnormally excessive activity or excitement.

Example:The art dealer's fixation with a rare Rembrandt painting led him to make an ill-advised purchase.

Definition:A persistent state of being preoccupied or obsessed with a particular idea or object. A deep and enduring preoccupation or interest, often leading to irrational behavior.