Monsoon Hair Care: Itchy Scalp, Dandruff and Fungal Infection

To care for your hair and scalp in the monsoon, keep the scalp clean and dry, wash it often enough to remove sweat and oil, dry your hair fully before tying it, and use an antifungal anti dandruff shampoo if you have flakes and itching. If you notice patches of hair loss, painful swelling, or pus filled bumps, see a doctor, because a true scalp fungal infection or folliculitis needs prescription treatment.

The Indian monsoon brings heat, high humidity, sudden downpours and long hours in damp clothes and helmets. Many people notice an itchier, greasier, flakier scalp during these months, and parents often worry about scalp infections spreading among school children. This guide explains the common monsoon scalp problems and what helps.

Why do scalp problems flare in the monsoon?

Several common scalp conditions are linked to sweat, oil and yeast:

• Malassezia yeast lives naturally on the skin. DermNet explains that it breaks down oils in sebum, which can trigger the inflammation of seborrhoeic dermatitis.
• Sweat and humidity keep the scalp damp, especially under helmets, caps, dupattas and hijabs.
• Hair that stays wet after rain or washing, and is tied up quickly, traps moisture against the scalp.
• Less frequent washing because hair takes longer to dry in humid weather.

Interestingly, DermNet notes that seborrhoeic dermatitis often improves in summer sun and flares in winter for many people, so not everyone will notice a monsoon flare. Triggers vary from person to person.

What are the common monsoon scalp problems?

Dandruff and seborrhoeic dermatitis. White or yellowish flakes, an itchy scalp, and sometimes redness along the hairline, eyebrows and sides of the nose. DermNet describes dandruff as a mild, uninflamed form of seborrhoeic dermatitis. See our guide to dandruff and seborrhoeic dermatitis.

Scalp folliculitis. DermNet describes small, very itchy pustules on the scalp, often worst along the front hairline, that become sore and crusted with scratching. Bacteria, Malassezia yeast and mites may all play a role.

Tinea capitis (true scalp ringworm). A fungal infection of the hair and scalp. DermNet notes that it mainly affects children aged 3 to 7, and that warm, humid environments, crowded households and contact with animals are risk factors. It causes scaly patches with hair loss, black dots where hairs break, and sometimes a painful, swollen, boggy area called a kerion, which can lead to permanent hair loss if not treated.

How can I tell dandruff from a fungal infection?

Feature	Dandruff or seborrhoeic dermatitis	Tinea capitis	Scalp folliculitis
Who	Teens and adults most often	Mostly children	Adults and teens
Flakes	Diffuse, all over the scalp	Patchy scaling	Crusts over bumps
Hair loss	No patches	Patches of hair loss or broken hairs	Usually none, unless severe
Bumps	No	Sometimes pustules or a swollen kerion	Itchy pus filled bumps
Treatment	Anti dandruff shampoo	Oral antifungal medicine from a doctor	Shampoos and sometimes prescription treatment

DermNet notes that seborrhoeic dermatitis can mimic tinea capitis, but its scale is usually more spread out. If a child has scaly patches with hair loss, assume it could be fungal and see a doctor.

How should I treat monsoon dandruff?

The American Academy of Dermatology and the NHS suggest anti dandruff shampoos with ingredients such as:

• Ketoconazole
• Zinc pyrithione
• Selenium sulfide
• Salicylic acid
• Coal tar

Tips from the American Academy of Dermatology:

• Massage the shampoo into the scalp and follow the label. Some products need to stay on for 5 to 10 minutes before rinsing.
• Apply medicated shampoo to the scalp, not the lengths, especially if your hair is curly or dry, because the active ingredients can be drying.
• Follow with a regular conditioner on the lengths if needed.
• Coal tar shampoo makes the scalp more sensitive to sun, so cover your head outdoors.

The NHS suggests trying a dandruff shampoo for up to four weeks and trying a different active ingredient if the first does not help.

Why does tinea capitis need oral medicine?

DermNet explains that creams and shampoos cannot penetrate deep enough into the hair follicle to clear tinea capitis, so oral antifungal medicine for several weeks is needed. Your doctor will choose the medicine and duration based on the child’s age, weight and the type of fungus. Anti fungal shampoo may be advised for the child and family members to reduce spread.

Tinea capitis spreads through shared combs, brushes, towels and caps, and from infected pets, especially cats. Please do not apply steroid or mixed creams to the scalp, which can make fungal infection worse. Our guide to ringworm and tinea in India explains why.

How should I care for my hair in the monsoon?

The American Academy of Dermatology offers practical hair care tips that are especially useful in humid weather:

• Wash as often as your scalp needs. If your scalp gets oily or sweaty, more frequent washing is fine. Curly or textured hair may need less frequent washing.
• Concentrate shampoo on the scalp, where oil and sweat build up.
• Use conditioner on the lengths, particularly if your hair is dry.
• Use a wide toothed comb on wet hair rather than a brush.
• Blot hair gently with a towel or soft cotton t shirt instead of rubbing.
• Limit heat styling, and use low or medium settings.

Monsoon specific habits that help:

• Dry hair fully before tying it up, especially before wearing a helmet, cap or scarf.
• Rinse your hair after getting drenched in rain, then dry it properly.
• Wash and dry helmet liners, caps and scarves regularly.
• Do not share combs, towels or caps, especially among children.
• Go easy on heavy scalp oiling if you have dandruff or an itchy, flaky scalp, and wash oil out rather than leaving it on for long periods.

Is monsoon hair fall normal?

Many people feel they lose more hair in the monsoon. Some extra shedding while combing damp, tangled hair is common, and breakage from rough handling adds to it. However, hair fall that continues for months, or comes with patches, scaling or itching, needs assessment rather than being blamed on the weather. A fever such as dengue or malaria in the rainy season can also trigger shedding a few months later. Our guides to hair fall in women and alopecia areata can help you understand other causes.

The monsoon can also affect the rest of your skin. Our guides to prickly heat and monsoon skin care and fungal acne cover common rainy season skin problems.

When to see a dermatologist

The NHS and the American Academy of Dermatology advise seeing a doctor if dandruff does not improve with treatment or is severe. See a dermatologist if:

• Dandruff or itching does not improve after about four weeks of a medicated shampoo
• Your scalp is red, swollen, painful or very itchy
• You see pus filled bumps, crusts or sores
• A child has scaly patches with hair loss, broken hairs or a swollen, boggy area
• Flaky, itchy patches spread to the face or body
• Hair fall continues for more than a few months

Most monsoon scalp problems settle with the right care, and true fungal infections clear with the right treatment. Dr. Maria offers online consultations to help work out whether your itchy scalp is dandruff, infection or something else, and what will help.