This is about Thyroid patient?

Hay my relative is a Hyperthyroid patient so my simple question is that a Hyperthyroid patient with 138.0 TSH should gain weight but he is loosing weight rapidly below are the resent test report.
patient present age/gender/weight : 54/m/61
Thyroid function test resent
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Triiodothyronine(T3)=====> 11 ng/dl (70 – 200)

Thyroxine(T4)=========> 0.80 ug/dl (3.4 – 13.6)

Thyroid stimulating hormone(TSH) ====> 138.0 ml (0.17 – 6.0)

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First detected and treatment taken date : Sept 6, 2000
Thyroid scan report Findings on sept 2000: Thyroid gland appears moderately enlarged.
uniform increased tracer uptake is seen in the gland
Diagnosis/Impression: Grave’s Disease
Treatment given on sept 2000: 7mCi of I-131 administered orally on siptember 06,2000 (patient weight was 60)
After this treatment patient weight was 71 after 3months that is on 01/2001 and all was fine.
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Test function on 2002 :T3(1.60) 0.75-2.1, T4(15.30) 4.7 – 11.1, TSH(0.10) 0.2 – 5.0

Test function on 02/2008 :TSH (67.10) 0.2 – 5.0
Test function on 06/2008 :TSH (38.5) 0.2 – 5.0

Medicine taken by patient from 2000 to may 2010 is :Eltroxin 1 tablet(100mg)/day
Medicine taken by patient from june 2010 till present date is :Eltroxin 1.5 tablet(150mg)/day
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problems faced by patient now is:
The patient is feeling full body ache and rapidly loosing weight his weight was 71(2008) now 61
and also he has acidity problem he is not eating sufficient food

so please inform me what is going on and what effective measures should be taken …..? Thank u