A condition where the thyroid gland produces too much hormone, speeding up metabolism and body functions.
During the first six months after diagnosis, the key evidence is medical records confirming when hyperthyroidism was first diagnosed. Lab results showing elevated thyroid hormone levels, a physician's diagnosis, and treatment records all help establish that date clearly.
After six months, evidence shifts to whatever residuals or treatment complications you have. For example, if you developed a heart condition, cardiology records and cardiac testing would support a separate evaluation. If your eyes were affected by Graves' disease, ophthalmology records documenting double vision or reduced visual acuity would be relevant. Records of any surgical, radioactive iodine, or medication treatment and the complications that followed are also important.
Your own statements, and statements from people who know you, describing how ongoing symptoms affect your work and daily life can help show the severity of any residual condition being rated under its own diagnostic code.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.