Chapter 28: Skin Disorders

1. Chapter 28: Skin Disorders

3. Skin Lesions Defined • Skin pigment - melanin • Variations may be due to anatomic, physiologic or pathophysiologic changes in skin blood flow • Normal skin appearance • Altered by external and internal factors • Cellulitis • Infectious inflammation of deep skin structures

6. Skin Trauma • Mechanical Forces that Cause Injury • Friction • Compression • Shearing • Stretching • Scraping • Tearing • Avulsing • Puncturing

7. Friction and Pressure Problems • Hyperkeratosis of the Hands and Feet • Etiology • Friction and pressure over bony protuberances • Painful when subcutaneous fat becomes inelastic • Prevention • Cushioning devices; wearing 2 socks • Lubricants to reduce friction, shaving calluses • For calluses on hands, special gloves or protective gear

8. Sign and Symptoms • Thickening, of horny layer of skin, ovular, elongated and brown • Painful with pressure • Management • Avoid emery boards and pumice as the increase in friction will stimulate skin to produce added callus • Use moisturizer • Pair off callus with scalpel • Padding

9. Blisters • Etiology • Result of a shearing force that produces a raised area that accumulates with fluid • Prevention • Use of dust or powder or lubricant to reduce friction • Tubular socks, 2 pairs of socks if feet are sensitive or perspire excessively • Appropriate shoes that are broken in • Padding and lubricants • Signs and Symptoms • Hot spot, sharp burning sensation, painful • Superficial area of skin raised with clear fluid

10. Management (intact blister) • Leave intact for 24 hours • Clean with antiseptic • Cut small incision to drain fluid (large enough that it won’t re-seal) • Prevent refilling with a pressure pad • Clean again with antiseptic • Use doughnut to prevent irritation • Monitor for infection, replace wet bandaging • Debridement can be performed when tenderness is gone

11. Management (open/torn blister) • Keep clean to avoid infection • Keep skin in place and apply non-adhering sterile dressing and padding • Monitor daily for infection • Management (denuded blister) • If blister is torn 1/2 inch or more remove skin flap • Clean and expose area, apply antiseptic with occlusive dressing • Second skin can be applied to raw area

12. Soft Corns and Hard Corns • Etiology • Caused by pressure of improperly fitting shoes and anatomic abnormalities • Soft corns are the result of pressure and perspiration, also associated with exostosis • Signs and Symptoms • Hard corns form on the tops of toes and tend to be painful and dry • Soft corns result in thickening of skin, white and sometimes painful (between 4th and 5th toes) • Prevention • Wear properly fitting shoes • Management • Surgical removal if painful • Padding; maintain clean dry feet; wear appropriate shoes

13. Excessive Perspiration (hyperhidrosis) • Etiology • Syrup-like perspiration, high in sodium chloride • Increases risk of other skin irritation • Makes adherence of bandages difficulty • Management • Use of astringent such as alcohol or an absorbent powder • Aluminum chloride or electric current can be used to treat condition

14. Chafing of Skin • Etiology • Occurs particularly in athletes that are obese or heavy limbed • Result of friction and maceration of skin in climate of heat and moisture • Signs and Symptoms • Separation of keratin from granular layer of skin • Causes oozing wounds that crust and crack • Prevention • Keep skin dry, clean, and friction free • For the groin, soft, loose, cotton underwear is recommended • Management • Clean area with soap and water and treat with medicated solution and hydrocortisone cream

15. Xerotic (Dry) Skin • Etiology • Drying of skin due to exposure of cold, excessive bathing, decrease in humidity causing skin to lose water • Signs and Symptoms • Dry skin w/ variable redness and scaling; itching • Management • Prevent water loss and replace lost water • Bathe in tepid water, use moisturizer • If condition worsens, refer to physician

16. Ingrown Toenails • Etiology • Generally occurs in great toe • Nail grows laterally into skin • Result of lateral pressure from shoes, poor nail trimming, and repeated trauma

17. Signs and Symptoms • Pain and swelling • Penetrated skin becomes inflamed and purulent with lateral nail fold swollen and irritated • Prevention • Properly fitting shoes and socks are essential • Weekly toenail trimming (cut straight across) • Leave nail long enough to clear skin • Management • Conservative management includes soaking the inflamed toe in warm water (20 minutes) • Place cotton under edge of nail to clear from skin • If chronic, remove wedge of nail and apply antiseptic compress until inflammation resides

18. Wounds • Abrasions • Scraping of skin against rough surface (top surface of skin is worn away) • Increased probability of infection due to exposure of dirt and foreign material • Clean and debride • Punctures • Direct penetration of skin with pointed object • Must be referred to physician

20. Lacerations • Object tears tissue, giving wound appearance of jagged edge (sometimes result of blunt trauma) • Presents environment susceptible to infection • Skin Incision • Smooth cut in skin - not jagged • Skin Avulsion • Skin torn away from body (should be placed in moist gauze w/in a plastic bag that is then immersed in cold water) • Transport to hospital with athlete for possible reattachment

22. Skin Bruises • Result of blunt trauma; causes disruption of superficial blood vessels and results in black and blue discoloration • Treatment requires RICE to control hemorrhaging

23. Wound Management • All wounds must be assumed contaminated • Pay close attention to all universal precautions • Clean all wounds with soap and water to minimize infection • Apply a dressing with antiseptic (unless physician examination is necessary) • Lacerations and punctures should be treated by a physician • Use of occlusive dressings • Minimizes scab formation, perceived pain from exposed nerves, cost and time effective, provide adequate barrier • Antibiotic ointment used to prevent secondary infection (SEE TABLE 28-4 for added instruction)

24. Athletic Training Room Practice in Wound Care • Use clean and sterile instruments • Clean hands thoroughly and use gloves • Clean in and around skin lesion • Use a non-medicated covering if athlete is to be sent for medical attention • Avoid touching any part of sterile dressings that will contact the wound • Place medication on pad • Secure the dressing in place

25. Bacterial Infections • Bacteria are single celled micro-organisms • Spherical, doublets, and spirochetes • Staphylococcus • Gram positive bacteria that appears in clumps in skin and upper respiratory tract • Streptococcus • Chain bacteria often associated with systemic disease and skin infections • Bacillus • Spore forming, aerobic, and occasionally mobile • Can cause systemic damage

26. Impetigo Contagiosa • Etiology • Caused by A-beta-hemolytic streptococci, S aureus or combination of these bacteria • Spread through close contact • Signs and Symptoms • Mild itching and soreness followed by eruption of small vesicles and pustules that rupture and crust • Generally develops in body folds that are subject to friction • Management • Cleansing and topical antibacterial agents • Systemic antibiotics

28. Furunculosis (Boils) • Etiology • Infection of hair follicle that results in pustule formation • Generally the result of a staphy. infection

29. Signs and Symptoms • Pustule that becomes reddened and enlarged as well as hard from internal pressure • Pain and tenderness increase with pressure • Most will mature and rupture • Management • Care involves protection from additional irritation • Referral to physician for antibiotics • Keep athlete from contact with other team members while boil is draining

30. Carbuncles • Etiology • Similar in terms of early stage development as furuncles • Signs and Symptoms • Larger and deeper than furuncle and has several openings in the skin • May produce fever and elevation of WBC count • Starts hard and red and over a few days emerges into a lesion that discharges yellowish pus • Management • Surgical drainage combined with the administration of antibiotics • Warm compress is applied to promote circulation

31. Folliculitis • Etiology • Inflammation of hair follicle • Caused by non-infectious or infectious agents • Moist warm environment and mechanical occlusion contribute to condition • Psuedofolliculitis (PFB)

32. Signs and Symptoms • Redness around follicle that is followed by development of papule or pustule at the hair follicle • Followed by development of crust that sloughs off with the hair • Deeper infection may cause scarring and alopecia in that area • Management • Management is much like impetigo • Moist heat is used to increase circulation • Antibiotics can also be used depending on the condition

33. Hidradenitis Suppurativa • Etiology • Primary inflammation event of the hair follicle resulting in secondary blockage of the apocrine gland • Signs and Symptoms • Begins as small papule that can develop into deep dermal inflammation • Management • Avoid use of antiperspirants, deodorants and shaving creams • Use medicated soaps and systemic antibiotics

34. Acne Vulgaris • Etiology • Inflammatory disease of the hair follicle and the sebaceous glands • Sex hormones may contribute • Signs and Symptoms • Present with whiteheads, blackheads, flesh or red colored papules, pustules or cysts • If chronic and deep = may scar • Psychological impact • Management • Topical and systemic agents used to treat acne • Mild soaps are recommended

35. Paronychia and Onychia • Etiology • Caused by staph, strep and or fungal organisms that accompany contamination of open wounds or hangnails • Damage to cuticle puts finger at risk • Signs and Symptoms • Rapid onset; painful with bright red swelling of proximal and lateral fold of nail • Accumulation of purulent material w/in nail fold • Management • Soak finger or toe in hot solution of Epsom salt 3 times daily • Topical antibiotics, systemic antibiotics if severe • May require pus removal through skin incision

36. Tetanus Infection (lockjaw) • Etiology • Acute infection of the CNS caused by tetanus bacillus • Bacteria enters through the blood and open wounds • Signs and Symptoms • Stiffness of the jaw and muscles of the neck • Muscles of facial expression produce contortion and become painful • Fever may become markedly elevated • Management • Treat in intensive care unit • Childhood immunization

37. Fungal Infections • Group of organisms that include yeast and molds which are usually not pathogenic • Grow best in unsanitary conditions with warmth, moisture and darkness • Infections generally occur in keratinized tissue found in hair, nails and stratum corneum • Dermatophytes (Ringworm fungi) • Cause of most skin, nail and hair fungal infections

38. Tinea of the Scalp (tinea capitis) • Signs and Symptoms • Ringworm of the scalp begins as a small papule that spreads peripherally • Appears as small grayish scales resulting in scattered balding • Easily spread through close physical contact • Management • Topical creams and shampoos are ineffective in treating fungus in hair shaft • Systemic antifungal agents are replacing older agents due to increased resistance • Some topical agents are used in conjunction

39. Tinea of the Body (tinea corporis) • Signs and Symptoms • Commonly involve extremities and trunk • Itchy red-brown scaling annular plaque that expands peripherally • Management • Topical antifungal cream

40. Tinea of the Nail (tinea unguium/ onchomycosis) • Signs and Symptoms • Fungal infection of the nail -- found commonly in those engaged in water sports or who have chronic athlete’s foot • Nail becomes thick, brittle and separated from its bed • Management • Some topical antifungal agents have proved useful • Systemic medications are most effective • Surgical removal of nail may be necessary if extremely infected

41. Tinea of the Groin (tinea cruris) • Etiology • Symmetric red-brown scaling plaque with snake-like border • Signs and Symptoms • Mild to moderate itching

42. Management • Treat until cured • Will respond to many of the non-prescription medications • Medications that mask symptoms should be avoided • Failure to respond to normal management may suggest a non-fungal problem (such as bacteria) and should be referred to a physician • May require additional topical medications and oral prescriptions

43. Athlete’s Foot (tinea pedis) • Etiology • Most common form of superficial fungal infection • Tricophyton species are most common cause of athlete’s foot • Webs of toes may become infected by a combination of yeast and dermatophytes • Signs and Symptoms • Extreme itching on soles of feet, between and on top of toes • Appears as dry scaling patch or inflammatory scaling red papules forming larger plaques • May develop secondary infection from itching and bacteria • Management • Topical antifungal agents and good foot hygiene

45. Candidiasis (Moniliasis) • Etiology • Yeast-like fungus that can produce skin, mucous membrane and internal infections • Ideal environment includes hot humid weather, tight clothing, and poor hygiene • Signs and Symptom • Infections w/in body folds • Presents as beefy red patches and possible satellite pustules • White, macerated border may surround the red area; deep painful fissures may develop at skin creases • Management • Maintain dry area • Use antifungal agents to clear infection

46. Tinea Versicolor • Etiology • Caused by a yeast • Appears commonly in areas in which sebaceous glands actively secrete body oils • Signs and Symptoms • Fungus produces multiple, small, circular macules that are pink, brown, or white • Commonly occur on chest, abdomen, and neck • Do not tan when exposed to sun and usually are asymptomatic • Management • Straightforward treatment - recurrences are common • Use selenium shampoo (Selsun) and topical econazole nitrate (or something similar) • When microorganism has been eradicated, re-pigmentation of the area will occur

47. Viral Infections • Ultramicroscopic organisms that require host cells to complete their life cycle • May stimulate cell chemically to produce more virus until host cell dies • Lies within bud-like structure that does not damage cell or virus, w/out causing infection • A number of skin infections are caused by viruses

48. Herpes Simplex Labialis, Gladiatorum, and Herpes Zoster • Etiology • Highly contagious and is usually transmitted directly through a lesion in the skin or mucous membrane • Resides in sensory nerve neurilemmal sheath following initial outbreak • Recurrent attacks stimulated by sunlight, emotional disturbances, illness, fatigue, or infection • Type I vs. Type II • Signs and Symptoms • Early indication = tingling or hypersensitivity in an infected area 24 hours prior to appearance of lesions • Local swelling followed by outbreak of vesicles • Athlete may feel ill w/ headache, sore throat, swollen lymph glands and pain in area of lesions

50. Signs and Symptoms (continued) • Vesicles generally rupture in 1-3 days spilling serous material • Heal in generally 10-14 days • If an athlete has an outbreak they should be disqualified from competition due to contagious nature of condition • Management • Herpes simplex lesions are self limiting - reduce pain and promote early healing • Use of antiviral drugs can reduce recurrence and shorten course of outbreak • Complications • Can lead to secondary infection