Crusts around the ankles and feet in the same patient as above The most typical skin changes are a red patch (erythematous macula) with a central vesicle or pustule that heals without scarring. This maculopapular rash can recur every 4–6 weeks and predominantly affect the upper chest and arms. Erythema nodosum-like skin lesions can affect the legs. When a skin biopsy is examined under the microscope, there can be signs of a neutrophilic<unk> . The joint pains in BADAS are typically episodic, migratory and affecting multiple joints. They can affect the small joints (e.g. interphalangeal joints of the fingers) and there can be<unk>  tenosynovitis, but there is no erosion or deformation in the long term. Diarrhea may also occur.
Bowel-associated dermatosis–arthritis syndrome
Mouth and genital ulcers with inflamed cartilage syndrome
Papular purpuric gloves and socks syndrome
Stevens–Johnson syndrome
Levamisole induced necrosis syndrome
Neuro-Behçet's disease
Acute cutaneous lupus erythematosus
Adult-onset Still's disease