The following is a partial list of the "C" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM). This list continues the information at List of MeSH codes (C16). Codes following these are found at List of MeSH codes (C18). For other MeSH codes, see List of MeSH codes. The source for this content is the set of 2006 MeSH Trees from the NLM. – skin and connective tissue diseases – connective tissue diseases – alpha 1-antitrypsin deficiency – cartilage diseases – chondromalacia patellae – osteochondritis – polychondritis, relapsing – Tietze syndrome – cellulitis – collagen diseases – Ehlers–Danlos syndrome – keloid – acne keloid – necrobiotic disorders – granuloma annulare – necrobiosis lipoidica – osteogenesis imperfecta – cutis laxa – dermatomyositis – Dupuytren's contracture – homocystinuria – lupus erythematosus, cutaneous – lupus erythematosus, discoid – panniculitis, lupus erythematosus – lupus erythematosus, systemic – lupus nephritis – lupus vasculitis, central nervous system – Marfan syndrome – mixed connective tissue disease – mucinoses – ganglion cysts – mucinosis, follicular – mucopolysaccharidoses – mucopolysaccharidosis i – mucopolysaccharidosis ii – mucopolysaccharidosis iii – mucopolysaccharidosis iv – mucopolysaccharidosis vi – mucopolysaccharidosis vii – myxedema – scleredema adultorum – neoplasms, connective tissue – myofibroma – Noonan syndrome – osteopoikilosis – panniculitis – erythema induratum – panniculitis, lupus erythematosus – panniculitis, nodular nonsuppurative – panniculitis, peritoneal – penile induration – pseudoxanthoma elasticum – rheumatic diseases – arthritis, rheumatoid – arthritis, juvenile rheumatoid – Caplan's syndrome – Felty's syndrome – rheumatoid nodule – Sjögren syndrome – spondylitis, ankylosing – Still's disease, adult-onset – hyperostosis, sternocostoclavicular – polymyalgia rheumatica – scleroderma, localized – scleroderma, systemic – scleroderma, diffuse – scleroderma, limited – CREST syndrome – skin diseases – acneiform eruptions – acne keloid – acne vulgaris – angiolymphoid hyperplasia with eosinophilia – breast diseases – breast cyst – breast neoplasms – breast neoplasms, male – carcinoma, ductal, breast – phyllodes tumor – fibrocystic breast disease – gynecomastia – lactation disorders – galactorrhea – Chiari–Frommel syndrome – mastitis – cicatrix – cicatrix, hypertrophic – keloid – acne keloid – cutaneous fistula – dermatitis – acrodermatitis – dermatitis, atopic – dermatitis, contact – dermatitis, allergic contact – dermatitis, photoallergic – dermatitis, toxicodendron – dermatitis, irritant – dermatitis, phototoxic – diaper rash – dermatitis, occupational – dermatitis, exfoliative – dermatitis herpetiformis – dermatitis, perioral – dermatitis, seborrheic – drug eruptions – epidermal necrolysis,