A heartbroken mum has paid tribute to her "amazing" and academically-gifted 18-year-old son who died after being put in an induced coma.
Joe Parker, 18, who was a second year sixth form student, was admitted to Southmead Hospital in Bristol after an adverse reaction to medication on February 17.
Joe, who was from Charfield in Gloucestershire, secured a place studying Advanced Maths at Warwick University while he was being treated in intensive care.