Bactrim and neck stiffness

My healthy sixteen year old daughter was prescribed Bactrim twice daily for acne on the 7th and began a full course on the 8th of April. Agressively preparing for a solo competition on clarinet, we did not get too concerned when she complained of some shortness of breath and neck stiffness and tightness at the base of her skull on the 13th. On the 14th she had some difficulty with hand and finger coordination. By late evening of the 16th she had developed an oral temp. of 101.3 F, was complaing of severe fatigue, had swollen and painful lymph glands at the base of her skull and under her jaw. When she awoke on the 17th after a fitful night, she had a red, raised, itchy rash from head to toe, swelling of the face, neck, and hands and a sensation of burning everywhere her clothing touched her skin. Her eyes were glazed and red. The Bactrim was discontinued. While some of the symptoms now are very slowly dissapating, she continues to complain or lethargy and dizziness, sleeping more than awake. Perhaps, needless to say, she bombed at her competition on the 15th. Sad, since she had been preparing for months. Thanks so much, Bactrim. We pray there are no lasting side effects that others have experienced.