Modifiers matching irregularity:

• small,
• visual,
• structural,
• local,
• extreme,
• epidermal,
• physiological,
• geological,
• genetic,
• minor,
• optical,
• geometric,
• biological,
• cardiac,
• tiny,
• geometrical,
• dental,
• cellular,
• large,
• menstrual,
• financial,
• microscopic,
• superficial,

Simple categories matching menstrual:

• disorder,
• distress,
• symptom,
• product,
• irregularity,
• problem,
• cycle,
• condition,
• disturbance,
• syndrome,
• supply,