# Medical causes of scalp and genital itching > Live situation record from CLSTR: https://clstr.news/situations/medical-causes-of-scalp-and-genital-itching > Updated: 2026-09-02T23:56:06.000Z. Sources: 2. Developments: 2. Medical discussions regarding the causes of persistent itching have expanded from seasonal scalp irritation to broader dermatological and hygiene-related concerns. Initial reports focused on scalp health, noting that seasonal changes—such as dry winter air or summer sweat—can trigger irritation. Chronic itching in this area may be linked to conditions like seborrheic dermatitis, psoriasis, or allergic reactions to hair products. Subsequent expert clarifications have addressed both scalp and genital itching. Regarding the scalp, specialists from the Oswaldo Cruz Institute (IOC) noted that head lice infestations are not necessarily a sign of poor hygiene and are most common in children aged 3 to 12. For genital itching, medical institutions like the Cleveland Clinic identified potential causes ranging from dryness and hygiene product irritation to fungal infections, bacterial vaginosis, or sexually transmitted infections. ## Timeline ### 2026-09-02: Health experts clarify causes of genital and scalp itching Health experts address common causes of itching, noting that genital irritation can stem from hygiene products or infections, while head lice infestations are unrelated to personal hygiene levels. 2 sources. https://clstr.news/cluster/health-experts-clarify-causes-of-genital-and-scalp-itching ### 2026-08-18: Causes of persistent scalp itching and seasonal irritation Persistent scalp itching can stem from seasonal changes, such as dry winter air or summer sweat, or chronic conditions like seborrheic dermatitis and psoriasis requiring medical diagnosis. 2 sources. https://clstr.news/cluster/causes-of-persistent-scalp-itching-and-seasonal-irritation --- Cite as: Medical causes of scalp and genital itching. CLSTR, https://clstr.news/situations/medical-causes-of-scalp-and-genital-itching