Conditions · Thyroid & Hashimoto’s

Signs and symptoms of Hashimoto’s thyroiditis

Tired no matter how much you sleep, gaining weight without changing anything, always cold, foggy, low — these are often written off as stress. They can also be early signs of Hashimoto’s. Here’s what to watch for, and when to get tested in Fredericksburg, VA.

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What is Hashimoto’s thyroiditis?

Hashimoto’s thyroiditis — also called Hashimoto’s disease or chronic lymphocytic thyroiditis — is an autoimmune condition in which the immune system gradually attacks the thyroid gland. Over time, the inflammation can reduce how much thyroid hormone the gland makes. It is the most common cause of an underactive thyroid (hypothyroidism).

Thyroid hormone helps set the pace for nearly every system in the body: energy, metabolism, body temperature, digestion, mood, and thinking. That is why Hashimoto’s symptoms are so wide-ranging — and why they are so often blamed on something else. The process usually develops slowly, over months or years, so many people adjust to feeling worse without realizing it.

Hashimoto’s is more common in women, often appears in middle age, and tends to run in families. People who already have another autoimmune condition may also be more likely to develop it.

This page covers the symptoms. For how we test for and treat Hashimoto’s, see our Thyroid & Hashimoto’s care page.

Common signs and symptoms of Hashimoto’s

Persistent fatigue

Exhaustion that doesn’t lift with rest and gets in the way of daily life.

Weight gain

Gaining weight, or unable to lose it, without a change in habits.

Feeling cold

Cold hands and feet, or feeling chilly when others are comfortable.

Skin, hair & nails

Dry skin, thinning hair, and brittle nails.

Brain fog & low mood

Trouble focusing, slower memory, and low or irritable mood.

Aches & stiffness

Muscle aches, weakness, and stiff or achy joints.

Constipation

Slower digestion as metabolism slows down.

Cycle changes

Heavier or irregular periods in women.

Early symptoms of Hashimoto’s you shouldn’t ignore

In the early stages, Hashimoto’s may cause no symptoms at all, or only subtle ones that are easy to dismiss. The first signs people often notice are a tiredness that sleep doesn’t fix, a few pounds that arrive without explanation, feeling colder than usual, and a mental “slowness” — words that are harder to find, tasks that take longer.

Some people also notice a feeling of fullness or tightness at the front of the neck. That can be a sign of an enlarged thyroid, called a goiter. Less commonly, early inflammation can briefly release extra thyroid hormone, causing a short phase of feeling anxious, jittery, or wired before the thyroid slows down.

None of these signs on its own means you have Hashimoto’s. But when several show up together and persist, they are worth a proper thyroid evaluation by a physician.

Physical changes that can point to Hashimoto’s

As thyroid hormone levels fall, the physical changes can become more noticeable. Skin may turn dry, pale, or rough. Hair can thin on the scalp, and some people notice thinning at the outer edge of the eyebrows. Nails may become brittle and split easily. The face can look puffy, and the voice may become hoarse.

Many people also describe muscle aches, cramps, or weakness and stiff joints that aren’t explained by exercise or injury. Swelling at the base of the neck, or discomfort when swallowing, should always be checked by a physician.

How Hashimoto’s affects energy and metabolism

Thyroid hormones — mainly T4 and its active form, T3 — help regulate how your cells turn food into energy. When levels drop, metabolism slows. That can show up as fatigue and sluggishness, weight that is harder to lose, feeling cold, and slower digestion.

It also helps explain why diet and exercise alone often stop working. If your thyroid is underactive, eating less and training harder can leave you more tired without moving the scale. Finding and addressing the thyroid piece is often what makes the rest of the plan possible.

Emotional and cognitive symptoms of Hashimoto’s

The brain is sensitive to thyroid hormone. Hashimoto’s can affect concentration, memory, and processing speed, and many people describe it simply as brain fog. Mood can be affected too: low mood, anxiety, irritability, and a loss of motivation are all reported.

These symptoms are real, and they are easy to misread as stress or burnout. If mood or thinking changes arrive alongside fatigue, weight gain, or feeling cold, it makes sense to check the thyroid.

Hashimoto’s symptoms in women

Women are more likely to develop Hashimoto’s, and some symptoms are specific to them. Thyroid changes can affect the menstrual cycle, leading to heavier, longer, or irregular periods, and an underactive thyroid can make it harder to conceive. Thyroid problems can also appear after pregnancy.

Hashimoto’s symptoms often overlap with perimenopause — fatigue, weight gain, poor sleep, low mood, and brain fog — so one can be mistaken for the other. Testing both thyroid and sex hormones helps tell them apart. If you are pregnant or planning a pregnancy, talk with your physician about thyroid testing. You can read more about the wider picture on our hormone imbalance page.

When to get tested

Consider a thyroid evaluation if

You’ve had several of the symptoms above for weeks or months
You’ve been told your thyroid is “normal” but still don’t feel right
A parent, sibling, or child has Hashimoto’s or another thyroid condition
You already have another autoimmune condition
You’ve noticed swelling or fullness at the front of your neck
You’re planning a pregnancy or have recently had a baby and feel unwell

Tests used to diagnose Hashimoto’s

TSH

The standard first-line thyroid test — useful, but only part of the picture.

Free T4 & free T3

How much active thyroid hormone is actually available.

Reverse T3

Helps show how well T4 is being converted into active T3.

TPO & thyroglobulin antibodies

The markers of the autoimmune process behind Hashimoto’s.

Why Hashimoto’s symptoms are often missed

Many people with these symptoms are tested with a single TSH, told the result is normal, and sent home. But thyroid antibodies can be present before TSH changes, and a basic panel doesn’t show how much active hormone your body is using. At True You, Dr. Hoff runs the full panel — TSH, free T4, free T3, reverse T3, and TPO and thyroglobulin antibodies — and looks at the root-cause context around it, including gut health, nutrients, and stress.

Hashimoto’s is a long-term condition, but it can be managed, and many people feel substantially better with the right plan. To see how we approach testing and treatment, visit our Thyroid & Hashimoto’s care page. Because Hashimoto’s is autoimmune, our autoimmune and gut health pages may also be useful.

Hashimoto’s symptoms — common questions

What are the first signs of Hashimoto’s?

Early signs are often subtle: fatigue that rest doesn’t fix, unexplained weight gain, feeling cold, dry skin, and brain fog. Some people have no symptoms at first. If several persist together, a thyroid evaluation is worth it.

Can I have Hashimoto’s with a normal TSH?

Yes. Thyroid antibodies can be present before TSH moves out of the reference range. That’s why we test TPO and thyroglobulin antibodies along with TSH, free T4, free T3, and reverse T3.

Is Hashimoto’s the same as hypothyroidism?

Not exactly. Hashimoto’s is the autoimmune process that affects the thyroid; hypothyroidism is the underactive thyroid it can lead to. Hashimoto’s is the most common cause of hypothyroidism.

Can Hashimoto’s cause weight gain?

It can. An underactive thyroid slows metabolism, which can make weight easier to gain and harder to lose, even when your habits haven’t changed.

Can Hashimoto’s cause anxiety?

It can be linked to mood changes, including anxiety and low mood. Early on, inflammation can also briefly release extra thyroid hormone and cause a jittery, wired feeling.

Who is more likely to develop Hashimoto’s?

It is more common in women and often appears in middle age. A family history of thyroid disease or having another autoimmune condition may also increase the likelihood.

Do you take insurance for thyroid testing?

True You is a cash-based practice, so testing is chosen on clinical judgment rather than coverage rules. We’re transparent about costs during your consultation.

How do I get tested in Fredericksburg?

Book an initial appointment. Your first visit and lab work are in person at our downtown Fredericksburg office, and many follow-ups can be handled virtually.

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