Inflammation of the meninges may lead to abnormalities of the cranial nerves , a group of nerves arising from the brain stem that supply the head and neck area and which control, among other functions, eye movement, facial muscles, and hearing.   Visual symptoms and hearing loss may persist after an episode of meningitis.  Inflammation of the brain ( encephalitis ) or its blood vessels ( cerebral vasculitis ), as well as the formation of blood clots in the veins ( cerebral venous thrombosis ), may all lead to weakness, loss of sensation, or abnormal movement or function of the part of the body supplied by the affected area of the brain.  
Pregnancy , as well as physical and emotional stress, increases cortisol concentrations within the bloodstream. Stress can increase cortisol and levels go up significantly when you are sick. Cortisol concentrations in the blood may also increase as a result of hyperthyroidism or obesity. A number of drugs can also increase cortisol, particularly oral contraceptives (birth control pills), hydrocortisone (the synthetic form of cortisol), and spironolactone.
Hypothyroidism may decrease the concentration of cortisol in the blood. Drugs that may decrease levels include some steroid hormones.