Differential Diagnosis for Itchy Scalp with Seborrheic Characteristics in Hot Weather
- Single Most Likely Diagnosis
- Seborrheic dermatitis: This condition is characterized by an itchy, flaky scalp and is often exacerbated by hot weather. The seborrheic characteristics mentioned in the question, such as oily skin, are consistent with this diagnosis.
- Other Likely Diagnoses
- Dandruff: A common condition that causes an itchy, flaky scalp, often worsened by hot weather and oily skin.
- Psoriasis: An autoimmune condition that can cause an itchy, scaly scalp, which may be exacerbated by hot weather.
- Eczema (atopic dermatitis): A chronic skin condition that can cause an itchy, inflamed scalp, which may be worsened by hot weather and seborrheic characteristics.
- Do Not Miss Diagnoses
- Tinea capitis (ringworm of the scalp): A fungal infection that can cause an itchy, scaly scalp, which may be mistaken for seborrheic dermatitis or other conditions. If left untreated, it can lead to serious complications.
- Lupus: A chronic autoimmune condition that can cause a range of symptoms, including an itchy, scaly scalp. While less likely, it is a potentially serious condition that should not be missed.
- Rare Diagnoses
- Pityriasis amiantacea: A rare condition characterized by a thick, scaly crust on the scalp, often associated with seborrheic dermatitis or psoriasis.
- Kerion: A rare, severe form of tinea capitis that can cause an itchy, inflamed scalp, often accompanied by hair loss and other symptoms.