Pupillary reflex is synonymous with pupillary response, which may be pupillary constriction or dilation. Both vaginal lubrication and vaginal dilation decrease. Methotrexate with dilation and curettage is used to treat molar pregnancy. It is straightforward to obtain quantitative expressions for time dilation and length contraction. Time dilation and length contraction are not merely appearances. Lymphangiectasia is a pathologic dilation of lymph vessels. They also may consider respiration rate, blood pressure, capillary dilation, and muscular movement. The nasal congestion is due to dilation of vessels in the nasal mucosa. Reported symptoms include anorexia, refusal to drink, vomiting, pupillary dilation, and muscle paralysis. Vacuum aspiration may be used earlier in pregnancy than dilation and curettage (D&C). The patient may be examined with pupillary dilation and education given prior to the procedure. Bradykinin lowers blood pressure by causing blood vessel dilation. The result is permanent abnormal dilation and destruction of the major bronchi and bronchiole walls. Valproic acid can also cause mydriasis, a dilation of the pupils. Also treated are pathologies in pneumology, tracheitis, bronchitis, bronchial dilation and finally asthma.