fissure(redirected from basisylvian fissure)
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fissureDermatology A groove, cleft, or sulcus, which may or may not be normal. See Anal fissure, Slanted palpebral fissure Neurology A groove or narrow cleft that separates 2 parts, such as the cerebral hemispheres of the brain.
Synonym(s): fissura (1) .
fissureA deep groove or furrow that divides an organ, such as the brain, into lobes.
fissuredeep epidermal cleft that penetrates to dermis; frequently painful and may become infected; may complicate fungal foot infections; treated by addressing the underlying cause
heel fissures fissuring of heel perimeter skin, associated with anhidrosis and loss of elasticity of perimeter skin (e.g. diabetes, hypothyroidism, the elderly), local fungal infection (causing loss of normal tensile skin strength), perimeter heel callus and loss of skin elasticity (e.g. overweight or clinically obese patients, compensated rearfoot and/or forefoot pronation); treated as necessary, e.g. addressing underlying systemic disease, identification and treatment of tinea pedis, reduction of local hyperkeratosis, regular application of hydrating emollients, referral for advice on weight control (see Box 1)
interdigital fissures fissures at depth of interdigital cleft between two adjacent toes; associated with skin maceration, hyperhidrosis, tinea infection or foot type characterized by excessive forefoot sagittal-plane movement (in compensation for forefoot or whole-foot varus); treated as necessary by topical astringents, antifungal preparations, orthoses
webbing fissure fissuring of plantar toe skin at its junction with plantar webbing; associated with dyshidrotic (hyperhidrotic or anhidrotic) skin and/or tinea pedis; treated by addressing dyshidrosis and/or use of antifungal preparations
|Antimycotic agent (for the treatment of dermatophytosis)|
|Skin||Topical allylamine (e.g. 1% terbinafine cream for 7 days)|
Topical imidazoles (e.g. 2% miconazole or 1% clotrimazole for 28 days)
Topical 0.25% amorolfine
Topical 1% econazole
Topical griseofulvin spray (400 μg puff daily for 14 days)
Topical 1% sulconazole
Topical tea tree (manuka) oil
Topical undecenoate (20% zinc undecenoate + 5% undecenoic acid)
Topical Whitfield's ointment (6% benzoic acid + 3% salicylic acid)
Other topicals include: weak iodine solution 2.5%; potassium permanganate paint 1%; salicylate acid cream or alcoholic solution 3-5%; benzoic acid (Whitfield's) ointment; sodium polymetaphosphate dusting powder
Systemic terbinafine (250 mg daily for 2 weeks)
Systemic itraconazole (100 mg daily for 15 days)
Systemic griseofulvin (500 mg daily )
|Nail||Topical amorolfine 0.25% lacquer as an adjunct to systemic treatment|
Topical borotannic acid complex acid; Phytex paint (1.46% salicylic acid + 4.89% tannic acid + 3.12% boric acid)
Topical 28% tioconazole lacquer
Topical undecenoate lacquer; Monphytol paint (5% methyl undecenoate + 0.7% propyl undecenoate + 3% salicylic acid + 25% methyl salicylate + 5% propyl salicylate + 3% chlorambucil)
Other topicals: strong iodine 10% solution
Systemic terbinafine (250 mg daily for 12-16 weeks)
Systemic itraconazole (400 mg for 1 week in a month, repeated overall 3 or 4 times)
Anticandidal agent (for the treatment of candidiasis)
|Skin||Topical antimycotic creams (1% clotrimazole; 1% econazole; 2% miconazole)|
Topical nystatin (100 000 units ± 1% tolnaftate)
Antipityriasis versicolor agent (for the treatment of pityriasis versicolor)
|Skin||Topical 2% ketoconazole|
Topical 2.5% selenium sulphide
Topical antimycotic agents (1% clotrimazole; 1% econazole; 2% miconazole; 1% sulconazole; 1% terbinafine)
2. lesion resembling a crack—for example, anal fissures.
calcarine fissure Fissure on the medial aspect of the occipital lobe separating the upper and lower halves. Its anterior portion is in front of the parieto-occipital fissure and the posterior portion extends round the occipital pole and even appears for a short distance on the lateral surface where it ends at the lunate sulcus. Syn. calcarine sulcus. See visual area; line of Gennari.
embryonic fissure See optic fissure.
inferior orbital fissure An elongated opening lying between the lateral wall and the floor of the orbit. It is bounded anteriorly by the maxilla and the orbital process of the palate bone and posteriorly by the greater wing of the sphenoid bone. Syn. sphenomaxillary fissure. See infraorbital artery; zygomatic nerve; Table O4.
interpalpebral fissure See palpebral aperture.
optic fissure An invagination of the inferior portion of the optic stalk of the embryo. The hyaloid vessels pass through that fissure to supply the developing crystalline lens. In cases in which the invagination (or fissure) fails to fully close, colobomas will be formed. Syn. embryonic fissure; choroidal fissure. See hyaloid artery; optic cup.
palpebral fissure See palpebral aperture.
sphenoidal fissure See superior orbital fissure.
sphenomaxillary fissure See inferior orbital fissure.
superior orbital fissure An elongated opening lying between the roof and the lateral walls of the orbit, that is, between the two wings of the sphenoid bone. Syn. sphenoidal fissure. See abducens nerve; oculomotor nerve; ophthalmic nerve; trochlear nerve; superior ophthalmic vein; Table O4.
Patient discussion about fissure
Q. What are the dentists going to do if I have Pit and fissure caries? I look at my teeth and i see tiny black stuff on the fissures of my molars. I am so freakin scared. Are the dentists going to do something painful?