What Causes High BP, TIA And Cold Sensitivity In An Elderly Man?
Thyroid
Detailed Answer:
An inadequately treated under-active thyroid condition ('hypothyroidism') can result in such cold sensitivity.
The treatment of hypothyroidism is levo thyroxine. I see he is on it already. However the dose needs to be right to achieve target blood test results. Generally I use a TSH goal of 1 to 2.5 but this is best individualized by his endocrinologist in-person based on findings of physical examination and comprehensive assessment overall.
If the TSH remains high, then the levo thyroxine dose needs to be adjusted to keep the TSH and Free T4 in target ranges in a steady and stable manner.
Hashimoto's thyroiditis is one of the main causes of hypothyroidism. Antibody tests for it are included below.
When I see someone like you in my practice, I typically order the following blood tests in addition to a detailed physical examination:
CBC (Complete Blood Count, also known as Hemogram; includes Hemoglobin, WBC and Platelet counts)
Electrolytes (Sodium and Potassium in particular)
Calcium
HbA1c (Glycosylated Hemoglobin = your 3 month glucose average)
Liver function tests (SGOT , SGPT, Albumin, Bilirubin, Alkaline Phosphatase)
Kidney function tests (BUN, Creatinine)
TSH
Free T4
Anti Thyroid Peroxidase (TPO) antibodies
Anti Thyroglobulin antibodies
25 hydroxy Vitamin D