Hypothyroidism with concurrent infection of H. canis in dog and its therapeutic management

A nine year old female dog of mixed breed was suspected for hypothyroidism on the basis of clinical signs and symptoms. Hypothyroidism was confirmed by estimation of serum levels of T₃, T₄, and TSH which were 0.24 ng/dl (0.45 - 1.5 ng/ml), 0.80 μg/dl (1.5 to 3.4 μg/dl) and 0. 22 uIU/dl (0.35 - 5.50) respectively. Clinically, dog showed lethargy, alopecia, seborrhoea, increase in weight and inappetance. The dog was treated with Sodium levothyroxine (Synthetic T4)@ 20 ugm/kg b. i.d. (Eltroxin*) for every twelve hour for one week.