Nataly Ahumada is desperately seeking medication in Colombia for her son, who has multiple disabilities and a disease that causes daily epileptic seizures. "It is frustrating to have to fight to find ways to afford it," says the 39-year-old, speaking about the essential medication for her son, Mateo Ahumada. Ahumada has been waiting for months due to global shortages, made worse by a health system in crisis. IMAGES AND SOUNDBITES