9.3 Hair Entanglement Probability

Hair Entanglement Probability increases when swallowed hair remains in the stomach long enough to aggregate into a regurgitable mass.

Affected by Gastric Hair Residence Time, Gastric Emptying Speed, hair load, grooming, and motility state.

Not every hairball means “hairball disease.” Not every case should be handled by hairball paste logic alone. Clinical obstruction boundary remains separate.

Duration hair stays in stomach.

Timing of onward passage.

Volume swallowed per day.

Physiological timing vs pathological disorder (separate page).

upstream food structure

↓

gastric emptying speed and hair residence time

↓

hair entanglement probability

↓

regurgitation probability

↓

hairball vomiting (observable output)

Hairball vomiting index is the backtrace entry—not a disease label by default.