1 Tracheoesophageal fistula: An abnormal channel forms to connect the trachea and the esophagus. 2  Passage of swallowed food from the esophagus into the trachea causes serious lung problems. 3  Tracheal foreign body: An object is inhaled (aspirated) and lodges in the trachea or one of its branches.
The cycle of hair growth in eyebrows is completely different and shorter compared to the cycle of hair growth in head. Usually for head hair, it will take around 5-6 months to regrow but in case of eyebrows it is only a matter of 2-3 months.
Whether you are not satisfied with the shape of your current eyebrows after threading, plucking or shaving, a major question you may ask is how long does it take for eyebrows to grow back. Most people have great conscious on the shape of eyebrows. Because eyebrows plays a major role in how the face appears.