Noticing a coin-shaped bald patch on the scalp while combing your hair or looking in the mirror makes most people uneasy. Known among the public as ringworm of the scalp, alopecia areata is a type of hair loss that starts suddenly and is usually characterized by well‑demarcated hair loss. This condition can affect not only the scalp but also the eyebrows, eyelashes, beard, and body hair. The most frequently asked question is: Will the hair grow back? The short answer is yes, it can; however, the course is not the same in every person and the disease may recur from time to time.
How Does Alopecia Areata Affect the Hair Follicles?
Alopecia areata is an autoimmune type of hair loss that affects the hair follicles. In other words, while the immune system continues its duty against microbes, it targets the hair follicles and disrupts their growth cycle. The important point here is that the hair follicles often do not disappear completely. For this reason, alopecia areata is classified among non‑scarring types of hair loss and hair regrowth may be possible.
Since the hair follicle largely preserves its viability, burns, scars, or permanent tissue loss are not seen on the skin. From the outside, the skin often appears normal; only the hair‑bearing area has disappeared. This feature is the basic mechanism that explains the possibility of hair growing back. Even so, factors such as how long the immune system’s effect on the hair follicle will last, how large an area is affected, and how often the condition recurs vary from person to person.
What Does Alopecia Areata Look Like?
Sudden Patch‑Like Bald Area
The most common presentation is a round or oval bald patch on the scalp that is noticed suddenly. These areas are usually well‑defined; in other words, where the hair loss starts and ends is clearly visible. In most people, the first thing that draws attention is not the amount of hair in the palm, but the obvious bald spot seen in the mirror.
Hair Loss Outside the Scalp
Ringworm of the scalp may not be limited to the head region. The eyebrows, eyelashes, beard and sometimes the hair on the arms, legs, or trunk can also be affected. In particular, loss of eyebrows and eyelashes can be more psychologically distressing because it causes a more pronounced change in appearance.
Absence of Scarring and Crusting on the Skin
In the area of hair loss, distinct wounds, crusts, discharge or firm swellings are usually not seen. The skin may remain smooth. This feature helps to distinguish it from fungal infections, inflammatory scalp diseases, or scarring alopecias; however, it does not provide a definitive diagnosis on its own.
Accompanying Nail Changes
In some people, small pits, thinning, or dullness may be seen on the nail surface. The presence of nail changes along with hair loss requires a more careful evaluation of the condition. It is not seen in every patient, so its absence does not rule out alopecia areata.
Will the Hair Grow Back, Can the Disease Recur?
In alopecia areata, hair regrowth is possible, and in some individuals, the hair may grow back even without treatment. The reason for this is that the hair follicle usually is not permanently lost. Newly growing hair may initially be fine, short, or lighter in color; over time, it may approach its former thickness and color.
However, hair regrowth is not guaranteed. In some individuals, hair loss limited to a single small area recovers in a short time, while in others, new patches may appear or the loss may become more widespread. When the eyebrows, eyelashes, and beard are involved, the process is monitored more closely. One important characteristic of the disease is that it can recur. A previously filled‑in area may open up again or a new patch may form in a different location.
It is difficult to predict the exact course in advance. The extent of hair loss, how long it has been ongoing, and whether other hair‑bearing areas are affected are the main points considered by the physician during follow‑up.
What Conditions Can It Be Associated With?
Background Related to the Immune System
Since this is an autoimmune process, it may coexist with other autoimmune diseases in some individuals. This association cannot be said to be present in every patient; however, this aspect is always questioned while taking the medical history. The presence of similar immune‑mediated diseases in the person or in the family is relevant in the evaluation.
Association With Atopic Constitution
People with atopic diseases such as eczema, allergic rhinitis, or asthma may also present with ringworm of the scalp. It is not correct to establish a direct single cause‑and‑effect relationship here. Nevertheless, the pattern of response of the skin and immune system may accompany this condition in some individuals.
Confusion With Stress‑Related Hair Loss
Many people think that ringworm of the scalp occurs only due to sadness or stress. However, stress alone is not an adequate explanation. Although some patients notice the hair loss after an intense period, the main problem is the immune response directed at the hair follicle.
Common Misconception About Contagiousness
Alopecia areata is not contagious. It is not transmitted to others through towels, combs, pillows, or close contact. In this respect, it differs from fungal scalp infections and should not cause unnecessary social avoidance for the affected person.
How Does the Physician Evaluate Alopecia Areata?
The first step in the diagnostic process is to carefully examine the pattern of hair loss and the appearance of the scalp. During a dermatology examination, the borders of the bald patch, the condition of the skin surface, the presence of hair loss in other areas, and accompanying nail changes are evaluated. If necessary, special magnification methods are used to examine the area around the hair follicles more closely.
The physician tries to distinguish this condition from fungal infections, hair‑pulling disorder, traction‑related hair loss, or certain scarring hair diseases. Laboratory tests are not necessary for every patient; however, if there is suspicion of accompanying disease, additional tests may be requested. The aim here is not only to observe the bald area, but also to understand the extent of the condition and whether there is any associated problem.
How Is Follow‑Up and Treatment Planned?
The choice of treatment depends on the extent and duration of hair loss, the person’s age, and whether areas such as the eyebrows and eyelashes are affected. In small and limited areas, close follow‑up alone may sometimes be sufficient, as the hair may grow back spontaneously. In more widespread or recurrent cases, the dermatologist considers different treatment options.
Expectations should be kept realistic. Even if treatment is initiated, the speed of hair regrowth, the permanence of the regrown hair, and the risk of recurrence are not the same for everyone. Oils, mixtures applied at home, or products recommended on social media and claimed to “revitalize” the hair follicles may delay medical evaluation. Especially if the eyebrows, eyelashes, or beard are involved, or if the bald patches are enlarging, it is better not to postpone medical assessment.
When Should You See a Doctor After Noticing Hair Loss?
If there is a sudden, well‑demarcated bald patch on the scalp, rapidly increasing areas of hair loss, or loss of eyebrows or eyelashes, a dermatologist should be consulted. Bald patches on the scalp in children should also be evaluated without delay, as they may be confused with other causes such as fungal infections. If small pits on the nails, patchy loss in the beard, or a marked reduction in body hair accompany the picture, clinical examination becomes even more necessary.
Ringworm of the scalp may not be physically painful; however, the change in appearance can significantly affect self‑confidence, social life, and daily mood. If the person constantly feels the need to cover their hair, or has difficulty going to work or school, this impact should also be considered as part of the treatment plan. The most appropriate approach is to clarify the type of hair loss and to create a follow‑up plan together with a dermatologist.
