Diseases that Cause
Hair Loss 

There are many diseases that cause hair loss, some from stress and others from autoimmune diseases. In contrast, others have a relation with hormonal imbalances and vitamin deficiency. The causes seem countless. For complete information, examine the article Causes of Hair Loss.  

Why analyze diseases that cause hair loss? 

To add to a list of problems we already have, what would we say to contract a painful, debilitating, or even disabling disease? What would we say if, apart from that, this disease was the leading cause of our hair loss? We can only say that it would be frustrating, discouraging, and anguishing.

So far, we have only seen the dark side of this. But bringing it to the positive side, knowing what causes our hair loss is good.

Maybe you are asking now: "Why is it important to analyze the diseases that cause hair loss?" Because that way, we can better understand each of them and counteract the cause.

You will see a series of diseases that, the great majority of them, cause the hair to fall, but some of them do not directly. Here is the list:

Acute Stress Disorder

Stress and hair loss are related. In alphabetical order, it is the first of the diseases that cause hair loss.

The loss of hair that comes from stress can occur either due to a very stressful physical or emotional event such as a divorce, the death of a loved one, injury, illness, surgery, or even severe financial problems.

That hair loss could happen between six weeks and three months since the incident.

There are three types of hair loss due to stress. The first one is, Telogen Effluvium. A stressful situation forces many hair follicles to enter into a resting phase. Those who stay in that phase suddenly begin to fall in a few months, just using shampoo or combing their hair.

The second is alopecia areata, which occurs when anxiety levels are high. That would provoke white blood cells to attack the hair follicles.

Trichotillomania is the third and not the very least. It is an irresistible desire to pluck out hair from the scalp, eyebrows, lashes, and other body parts.

But hair loss can be left behind. Just by keeping stress under control, hair will re-grow. You can also check out the article titled: Hair Loss from Stress to see why stress and hair loss are related and better comprehend this condition ravaging our people in these times we live.

Allergy Hair Loss

Some believe that allergy hair loss is not possible. Also, many people see it almost as a fairy tale. But there is a great reality, and we cannot hide our eyes from the truth. Allergy hair loss can happen.

For example, some usually dye their hair, of course, for a good-looking appearance. The last you could imagine is a chemical in those dyes that cause hair loss. This chemical is called Para Phenylenediamine or PPD and is present in two-thirds of all hair colorants out there.

So, using some dyes creates an allergy that causes the hair to fall out. But the vast majority of allergies do not. Therefore, allergies per se are not diseases that cause hair loss.

Why did I mention some believe there is no relation between allergies and hair loss? See one example. According to The Belgravia Centre, the link between a food allergy and hair loss is remote. If someone has hair loss due to a food allergy by coincidence, there could be many reasons behind that. That's what they say.

First, many who suffer from allergies have a hormonal imbalance, such as thyroid diseases and adrenal disorder, which are often related to the loss and thinning of hair.

In addition, individuals with food allergy symptoms might well not have enough vitamins, minerals, or nutritional supplements. If a lack of these occurs, it could affect hair development.

Stress may be just another contributing factor, which will often cause temporary baldness. Some believe there is a relationship between the symptoms of food allergy and alopecia areata. Both are autoimmune ailments. Diseases that cause hair loss or are prone to do it.

In what other areas can allergies cause hair loss? In the article "Allergy Hair Loss," these five reasons are analyzed:

If you want to see five more, you should read the article "Can Allergies Cause Hair Loss.

Alopecia Areata

Alopecia Areata or Alopecia Circumscripta is an autoimmune disease. It causes hair loss in some regions of the scalp.

But why is alopecia areata among the diseases that cause hair loss? Being an autoimmune condition, instead of the body protecting itself from infections, it attacks the hair follicles of the scalp.

Although Alopecia Areata seems to have round patches of hair loss, at other times, the loss is in the entire head. When this is the case, it is called alopecia areata totalis. When hair loss is in the whole body, it is known as Alopecia Areata Universalis.


One of the diseases that cause hair loss is not caused by a foreign intruder but by a lack of an essential mineral in our body.

Iron in the blood is necessary for the production of red blood cells. These, in turn, carry oxygen to the different parts of the body. If there is an iron deficiency, it will lead to anemia. The result is that less oxygen goes to the scalp.

When that happens, the body goes into survival mode. Then, our system's priority is to keep the vital organs. That makes the body stops sending oxygen to what is not so important, such as hair, for instance, instead of keeping it intact.

That's like the ships of ancient times and some modern ones too. If the vessel were on the high seas and faced a storm, the sailors would throw overboard what they did not think were essential. For example, they only would keep what they consider most valuable as human beings. 

Well, the same happens with our bodies. Remember that our body system has a brain for itself. When our body detects that red blood cells are decreasing, they turn on the alarm.

From that moment, they concentrate on bringing nutrients to our vital organs such as the heart, brain, liver, etc. Then everything else is thrown overboard, including hair, considering it a luxury. That's why anemia is one of the diseases that cause hair loss.

The contrary is also true. As WebMD stated, when treating a patient with low blood iron levels, hair loss is also less, and the scalp is better primed to regrow more hair.

Until now, we have seen the 1st part of diseases that cause hair loss, from Acute Stress Disorder to Anemia. What will come in the 2nd article? I know curiosity killed the cat, but nothing of that shall happen if you click the button that says next at the bottom of this page.