Studies Click each study below to find out if you are eligible to participate. Hidradenitis suppurativa (HS) Learn More » Hand Eczema(CHE) Learn More » Acne: Moderate-to-Severe Learn More » Psoriasis Learn More » Adolescent Atopic Dermatitis (Eczema) Learn More » Vitiligo Learn More » Pediatric Atopic Dermatitis (Eczema) Learn More » Prurigo Nodularis (PN) Learn More » Pediatric Alopecia (Hair Loss) Learn More » Atopic Dermatitis (Eczema) Learn More »