During both the hyperthyroid and hypothyroid phases, radioiodine uptake is decreased. Thyroid function tests may demonstrate a hyperthyroid state. Typically there is a transient hyperthyroid phase that is followed by a phase of hypothyroidism. For hyperthyroid patients, both TSH and T are usually monitored. People with hyperthyroid will typically "take up" higher than normal levels of radioiodine. The initial phase of hyperthyroid symptoms occurs transiently about two to six months postpartum. She was later diagnosed with a hyperthyroid condition. Beta-blockers relieve rapid heart rate and excessive sweating during the hyperthyroid phase. About 5% of hyperthyroid patients display abnormal nail changes. In patients who are truly hypo- or hyperthyroid, TBG testing is not very useful. Even then, upon cessation of the drugs, the hyperthyroid state may recur. Exophthalmos, when present, may exacerbate hyperthyroid lid-lag and stare. As a result, the hyperthyroid phase may pass undetected. Hyperthyroid induced craniosynostosis is a hormone mediated premature closure.