Dermatology Made Simple : Fungal Infections of the skin

Fungal Infections of Scalp:

Etiology / Causative Organisms

These are most frequently caused by Tinea capitis.

Major fungal Pathogens include:

Trichophyton

Microsporum

Epidermophyton

Clinical presentation:

These may present in one of following ways:

Scaling

Alopecia (Hair Loss)

Yellow crusts on the scalp.

Grey patches

Pustules

Kerion : Boggy inflamed pustular lesion on the scalp.

Investigations:

Scalp brushings must be taken to isolate fungal pathogens.

Management:

Systemic Antifugnals are usually needed as topical antifungals are unable to penetrate the affected areas.

Griseofulvin

Has minimal side effects.

Most effective for Microsporum Infections.

Dose is 10 mg / kg if over 1 month of age

Terbinafine:

Most effective against Tinea Tonsurans.

Dose : depends on the weight of the patient

< 20 kg : 62.5 mg

20 – 40 mg : 125 mg

  Ø  40 kg : 250 mg OD



TTinea Capitis involving Scalp