Conditions treated
Thyroid and hormone conditions treated in Diamond Bar, California
Thyroid and hormone problems are diagnosed here with a complete panel — TSH, free T4, free T3, and antibodies — read alongside your full history, not a single lab value. Dr. Hitendra H. Shah, MD has spent more than 40 years connecting symptoms to the underlying cause for patients across Diamond Bar and the San Gabriel Valley.
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Conditions we treat
Hashimoto's Thyroiditis
The most common autoimmune cause of low thyroid function — evaluated with antibody testing and attention to the immune drivers behind it.
Common symptoms
- Fatigue that sleep does not fix
- Fluctuating energy — good weeks followed by crashes
- Weight gain or difficulty losing weight
- Brain fog and poor concentration
- Cold intolerance
Hypothyroidism (Underactive Thyroid)
Persistent fatigue, weight gain, cold intolerance, and brain fog that lab-by-lab management alone has not resolved.
Common symptoms
- Persistent fatigue and low stamina
- Unexplained weight gain or trouble losing weight
- Feeling cold when others are comfortable
- Brain fog, slowed thinking, and memory lapses
- Dry skin, brittle nails, and hair thinning
Graves' Disease (Hyperthyroidism)
Autoimmune overactivity of the thyroid, including eye symptoms, managed with careful testing, monitoring, and coordinated care.
Common symptoms
- Rapid or pounding heartbeat and palpitations
- Anxiety, restlessness, and irritability
- Unintended weight loss despite a good appetite
- Heat intolerance and heavy sweating
- Hand tremor
Thyroid Nodules
Lumps, swelling, or an enlarged thyroid found on exam or imaging — evaluated for function and for whether further workup is needed.
Common symptoms
- A visible or palpable lump in the front of the neck
- Neck pressure or a tight feeling in the throat
- Difficulty or discomfort swallowing
- Hoarseness or a change in voice
- Shortness of breath when lying flat (with larger nodules)
Hormone Imbalance
Hot flashes, sleep disruption, low libido, weight change, and mood shifts assessed alongside thyroid, adrenal, and metabolic health.
Common symptoms
- Fatigue and low stamina through the day
- Weight gain, especially around the midsection
- Poor sleep or waking at 2–4 a.m.
- Hot flashes and night sweats
- Low libido
Answers
Questions about thyroid conditions
- What thyroid conditions are treated in Diamond Bar, California?
- Wellness Medical Clinic & Thyroid Treatment Center treats Hashimoto's thyroiditis, hypothyroidism, Graves' disease and hyperthyroidism, thyroid nodules, and hormone imbalance including perimenopause and menopause symptoms.
- What are the most common symptoms of a thyroid problem?
- Fatigue, unexplained weight change, cold or heat intolerance, hair thinning, brain fog, palpitations, and mood changes are reported most often. A complete thyroid panel is needed to tell which condition is behind them.
- Which tests are used to diagnose a thyroid condition?
- Evaluation typically includes TSH, free T4, free T3, and thyroid antibodies, reviewed together with your symptoms, physical exam, and metabolic markers rather than one value alone. Ultrasound is added when nodules or gland enlargement are suspected.
- Do I need a referral to be seen?
- Most patients can request an appointment directly. If your insurance plan requires a referral for specialist care, check with your plan first, then call the clinic at (909) 860-2610.
Written and reviewed by Dr. Hitendra H. Shah, MD. Last updated: August 11, 2026.
Diamond Bar, California
Not sure which condition fits your symptoms?
Request an appointment with Dr. Shah and start with a full picture of your thyroid and hormone health.