Dear Sheela Thomas .
I read carefully your problems and understud your councern.
I have some explain as follow:
About your questation about 
skin rash and hypothyroid , my answer is :Yes we have case with skin rash during hypothyroid.
Iam telling you that we have skin changes in hypothyroid like:
•     Acute 
eczema (or 
dermatitis) refers to a rapidly evolving red rash which may be blistered 
Cold peripheries with pale and dry coarse skin
•     Eczema craquelé – a form of dermatitis in which there is crazy paving splitting of the skin surface
•     A yellowish hue to the skin secondary to carotenaemia
Please can you tell in wich part of your bady have rash ?
From how long its happend that?
The terapy that docter perscripet on you  is an antihistamine, prescribed for allergic conditions
You are telling me that your ASO TITER IS 1:1800iu/ml 
In these  case when  ASO test is positive and elevated greater than or equal to 400 mg/dl, it is likely the person to has recent infection and should be treated.
Symptoms results from High ASO titer in the blood for RA patients is :
• Skin rash
For that please you must t o check for Arthrit rheumatoid during counsoult with rheumatologies.
The uric acid 
blood test   is  7.0mg/dl ., for Women the normal level are  2.4 to 6.0 Milligrams per Deciliter.
These level is  a common form of arthrit or join problems and allso 
kidney  stone and some times in hypothyroid pationts.
 My  with dermatologies  for the skin rash , (where is localation etc 
) endocrinology after your check thyroid hormone levels 
Tsh T3 T4 and rheumatology for hight level Acid uric 
.  Thankyou for asking on HCM , hope that iam answered our questations 
regards 
klodina poshi