A saddle sore in humans is a skin ailment on the buttocks due to, or exacerbated by, horse riding or cycling on a bicycle saddle. It often develops in three stages: skin abrasion, folliculitis (which looks like a small, reddish acne), and finally abscess.

Because it most commonly starts with skin abrasion, it is desirable to reduce the factors which lead to skin abrasion. Some of these factors include:

- Reducing the friction. In equestrian activities, friction is reduced with a proper riding position and using properly fitting clothing and equipment. In cycling, friction from bobbing or swinging motion while pedaling is reduced by setting the appropriate saddle height. Angle and fore/aft position can also play a role, and different cyclists have different needs and preferences in relation to this.

- Selecting an appropriate size and design of horse riding saddle or bicycle saddle.

- Wearing proper clothing. In bicycling, this includes cycling shorts, with chamois padding. For equestrian activity, long, closely fitted pants such as equestrian breeches or jodhpurs minimize chafing. For western riding, closely fitted jeans with no heavy inner seam, sometimes combined with chaps, are preferred. Padded cycling shorts worn under riding pants helps some equestrians, and extra padding, particularly sheepskin, on the seat of the saddle may help in more difficult situations such as long-distance endurance riding.

- Using petroleum jelly, chamois cream or lubricating gel to further reduce friction.

If left untreated over an extended period of time, saddle sores may need to be drained by a physician.

In animals such as horses and other working animals, saddle sores often form on either side of the withers, which is the area where the front of a saddle rests, and also in the girth area behind the animal's elbow, where they are known as a girth gall. Saddle sores can occur over the loin, and occasionally in other locations. These sores are usually caused by ill-fitting gear, dirty gear, lack of proper padding, or unbalanced loads. Reducing friction is also of great help in preventing equine saddle sores. Where there is swelling but not yet open sores, the incidence of sore backs may be reduced by loosening the girth, but not immediately removing the saddle after a long ride, thus allowing normal circulation to return slowly.

Some of the investigations done for ulcer are:

- Study of discharging fluid: Culture and sensitivity

- Edge biopsy: Edge contains multiplying cells

- Radiograph of affected area to look for periostitis or osteomyelitis

- FNAC of lymph node

- Chest X-ray and Mantoux test in suspected tuberculous ulcer

FNA and surgery is often not recommended, these can introduce infection and the hygroma will return larger. Donut bandage and soft bedding are key to treating. In the past it was common for veterinarians to treat hygromas by aspiration (using a syringe and drawing the fluid out) or surgically placing a drain. This can address the symptom, but does not treat the cause of the hygroma. In addition any incision at a joint can be difficult to close and may result in an open sore. Consequently, the recommended treatment of choice for most hygromas is no longer aspiration or surgery, but commercially available elbow pads made for the treatment of this condition.

Providing bedding or other padding in the areas the animal lies down can be helpful. In addition, trauma to the joint may occur during play or other physical activities.

The nipples of nursing mothers naturally make a lubricant to prevent drying, cracking, or infections. Cracked nipples may be able to be prevented by:

- Avoid soaps and harsh washing or drying of the breasts and nipples. This can cause dryness and cracking.

- Rubbing a little breast milk on the nipple after feeding to protect it.

- Keeping the nipples dry to prevent cracking and infection.

Roman chamomile can be applied directly to the skin for pain and swelling and is used to treat cracked nipples.

Skin ulcers may take a very long time to heal. Treatment is typically to avoid the ulcer getting infected, remove any excess discharge, maintain a moist wound environment, control the edema, and ease pain caused by nerve and tissue damage.

Topical antibiotics are normally used to prevent the ulcer getting infected, and the wound or ulcer is usually kept clear of dead tissue through surgical debridement.

Commonly, as a part of the treatment, patients are advised to change their lifestyle if possible and to change their diet. Improving the circulation is important in treating skin ulcers, and patients are consequently usually recommended to exercise, stop smoking, and lose weight.

In recent years, advances have been made in accelerating healing of chronic wounds and ulcers. Chronic wounds produce fewer growth hormones than necessary for healing tissue, and healing may be accelerated by replacing or stimulating growth factors while controlling the formation of other substances that work against them.

Leg ulcers can be prevented by using compression stockings to prevent blood pooling and back flow. It is likely that a person who has had a skin ulcer will have it again; use of compression stockings every day for at least 5 years after the skin ulcer has healed may help to prevent recurrence.

Cracked nipples can be treated with 100% lanolin. Glycerin nipple pads can be chilled and placed over the nipples to help soothe and heal cracked or painful nipples. If the cause of cracked nipples is from thrush, treatment is usually begun with nystatin. If the mother is symptomatic then the mother and the baby can be treated. Continuing to breastfeed will actually help the nipples heal. A little breast milk or purified lanolin cream or ointment helps the healing process. Breastfeeding professionals that include nurses, midwives and lactation consultants are able to assist in the treatment of cracked nipples.

Advice from others is abundant but there have been some treatments that have been identified as not being effective in healing or preventing cracked nipples. These ineffective treatments are keeping the breastfeeding short and using a nipple guard. Keeping the feedings short so that the nipples can rest is not effective in relieving the pain of cracked nipples and it could have a negative effect on the milk supply. Nipple shields do not improve latching on.

Other conditions that can result in symptoms similar to the common form include contact dermatitis, herpes simplex virus, discoid lupus, and scabies.

Other conditions that can result in symptoms similar to the blistering form include other bullous skin diseases, burns, and necrotizing fasciitis.

Impetigo is usually diagnosed based on its appearance. It generally appears as honey-colored scabs formed from dried serum, and is often found on the arms, legs, or face. If a visual diagnosis is unclear a culture may be done to test for resistant bacteria.

A diagnosis can be made from clinical signs and symptoms, and treatment consists of minimizing the discomfort of symptoms. It can be differentiated from herpetic gingivostomatitis by the positioning of vesicles - in herpangina, they are typically found on the posterior oropharynx, as compared to gingivostomatitis where they are typically found on the anterior oropharynx and the mouth.

The diagnosis is usually made based upon the clinical appearance, and swabs can be taken of the surface of the denture. Investigations to rule out possibility of diabetes may be indicated. Tissue biopsy is not usually indicated, but if taken shows histologic evidence of proliferative or degenerative responses and reduced keratinization and epithelial atrophy.

Treatment is usually supportive only, as the disease is self-limiting and usually runs its course in less than a week.

Denture-related stomatitis is usually a harmless condition with no long term consequences. It usually resolves with simple measures such as improved denture hygiene or topical antifungal medication. In severely immunocompromised individuals (e.g. those with HIV), the infection may present a more serious threat.

Angular cheilitis could be considered to be a type of cheilitis or stomatitis. Where Candida species are involved, angular cheilitis is classed as a type of oral candidiasis, specifically a primary (group I) Candida-associated lesion. This form angular cheilitis which is caused by Candida is sometimes termed "Candida-associated angular cheilitis", or less commonly, "monilial perlèche". Angular cheilitis can also be classified as acute (sudden, short-lived appearance of the condition) or chronic (lasts a long time or keeps returning), or refractory (the condition persists despite attempts to treat it).

Angular chielitis is normally a diagnosis made clinically. If the sore is unilateral, rather than bilateral, this suggests a local factor ("e.g.", trauma) or a split syphilitic papule. Angular cheilitis caused by mandibular overclosure, drooling, and other irritants is usually bilateral.

The lesions are normally swabbed to detect if Candida or pathogenic bacterial species may be present. Persons with angular cheilitis who wear dentures often also will have their denture swabbed in addition. A complete blood count (full blood count) may be indicated, including assessment of the levels of iron, ferritin, vitamin B12 (and possibly other B vitamins), and folate.

Beau's lines are deep grooved lines that run from side to side on the fingernail or the toenail. They may look like indentations or ridges in the nail plate. This condition of the nail was named by a French physician, Joseph Honoré Simon Beau (1806–1865), who first described it in 1846.

Beau's lines are horizontal, going across the nail, and should not be confused with vertical ridges going from the bottom (cuticle) of the nail out to the fingertip. These vertical lines are usually a natural consequence of aging and are harmless. Beau's lines should also be distinguished from Muehrcke's lines of the fingernails. While Beau's lines are actual ridges and indentations in the nail plate, Muehrcke lines are areas of hypopigmentation without palpable ridges; they affect the underlying nail bed, and not the nail itself. Beau's lines should also be distinguished from Mees' lines of the fingernails, which are areas of discoloration in the nail plate.

There are several causes of Beau's lines. It is believed that there is a temporary cessation of cell division in the nail matrix. This may be caused by an infection or problem in the nail fold, where the nail begins to form, or it may be caused by an injury to that area. Some other reasons for these lines include trauma, coronary occlusion, hypocalcaemia, and skin disease. They may be a sign of systemic disease, or may also be caused by an illness of the body, as well as drugs used in chemotherapy or malnutrition. Beau's lines can also be seen one to two months after the onset of fever in children with Kawasaki disease.

Human nails grow at a rate which varies with many factors: age, and the finger or toe in question as well as nutrition. However, typically in healthy populations fingernails grow at about 0.1mm/day and toenails at about 0.05mm/day. With this in mind the date of the stress causing Beau's lines and other identifiable marks on nails can be estimated. As the nail grows out, the ridge visibly moves upwards toward the nail edge. When the ridge reaches the nail edge, the fingertips can become quite sore due to the mis-shapen nail pressing into the flesh deeper than usual, exposing the sensitive nail bed (the quick) at the nail edge.

A researcher found Beau's lines in the fingernails of two of six divers following a deep saturation dive to a pressure equal to 305 meters of sea water, and in six of six divers following a similar dive to 335 meters. They have also been seen in Ötzi the Iceman.

Intertrigo can be diagnosed clinically by a medical professional after taking a thorough history and performing a detailed physical examination. Many other skin conditions can mimic intertrigo's appearance including erythrasmascabies, pyoderma, atopic dermatitis, candidiasis, and seborrheic dermatitis, and fungal infections of the superficial skin caused by "Tinea versicolor" or "Tinea corporis".

Saddle nose is a condition associated with nasal trauma, congenital syphilis, relapsing polychondritis, granulomatosis with polyangiitis, cocaine abuse, and leprosy, among other conditions. The most common cause is nasal trauma. It is characterized by a loss of height of the nose, because of the collapse of the bridge. The depressed nasal dorsum may involve bony, cartilaginous or both bony and cartilaginous components of the nasal dorsum.

It can usually be corrected with augmentation rhinoplasty by filling the dorsum of nose with cartilage, bone or synthetic implant. If the depression is only cartilaginous, cartilage is taken from the nasal septum or auricle and laid in single or multiple layers. If deformity involves both cartilage and bone, cancellous bone from iliac crest is the best replacement. Autografts are preferred over allografts. Saddle deformity can also be corrected by synthetic implants of teflon or silicon, but they are likely to be extruded.

Intertrigo is treated by addressing associated infections, by removing moisture from the site, and by using substances at the site to help maintain skin integrity. If the individual is overweight, losing weight may also help. Relapses of intertrigo are common.

Keeping the area of the intertrigo dry and exposed to the air can help prevent recurrences, as can removing moisture from the area using absorbent fabrics or body powders, including plain cornstarch and judiciously used antiperspirants.

Greases, oils, and barrier ointments, may help by protecting skin from moisture and from friction. Antifungal powders, most commonly clotrimazole 1%, may also be used in conjunction with a barrier ointment. Diaper rash ointment can also help.

Fungal infections associated with intertrigo may be treated with prescription antifungals applied directly to the skin (in most cases) or systemic antifungals, including fluconazole, nystatin, and griseofulvin.

Intertrigo is also a known symptom of vitamin B6 deficiency.

Both sex are equally affected

Any age group can develop a parapheryngeal abscess but it is most commonly seen in children and adolescents. Adults who are immunocompromised are also at high risk.

Treatment includes fluid intake, good oral hygiene and gentle debridement of the mouth, as well as oral acyclovir. In healthy individuals the lesions heal spontaneously in 7–14 days without scarring.

The likelihood of the infection being spread can be reduced through behaviors such as avoiding touching an active outbreak site, washing hands frequently while the outbreak is occurring, not sharing items that come in contact with the mouth, and not coming into close contact with others (by avoiding kissing, oral sex, or contact sports).

Because the onset of an infection is difficult to predict, lasts a short period of time and heals rapidly, it is difficult to conduct research on cold sores. Though famciclovir improves lesion healing time, it is not effective in preventing lesions; valaciclovir and a mixture of acyclovir and hydrocortisone are similarly useful in treating outbreaks but may also help prevent them.

Acyclovir and valacyclovir by mouth are effective in preventing recurrent herpes labialis if taken prior to the onset of any symptoms or exposure to any triggers. Evidence does not support L-lysine.

The distinction between viral upper respiratory tract infections is loosely based on the location of symptoms with the common cold affecting primarily the nose, pharyngitis the throat, and bronchitis the lungs. However, there can be significant overlap and multiple areas can be affected. The common cold is frequently defined as nasal inflammation with varying amount of throat inflammation. Self-diagnosis is frequent. Isolation of the viral agent involved is rarely performed, and it is generally not possible to identify the virus type through symptoms.

Septal perforations are managed with a multitude of options. The treatment often depends on the severity of symptoms and the size of the perforations. Generally speaking anterior septal perforations are more bothersome and symptomatic. Posterior septal perforations, which mainly occur iatrogenically, are often managed with simple observation and are at times intended portions of skull base surgery. Septal perforations that are not bothersome can be managed with simple observation. While no septal perforation will spontaneously close, for the majority of septal perforations that are unlikely to get larger observation is an appropriate form of management. For perforations that bleed or are painful, initial management should include humidification and application of salves to the perforation edges to promote healing. Mucosalization of the perforation edges will help prevent pain and recurrent epistaxis and majority of septal perforations can be managed without surgery.

For perforations in which anosmia, or the loss of smell, and a persistent whistling are a concern the use of a sillicone septal button is a treatment option. These can be placed while the patient is awake and usually in the clinic setting. While complications of button insertion are minimal, the presence of the button can be bothersome to most patients.

For patients who desire definitive close, surgery is the only option. Prior to determining candidacy for surgical closure, the etiology of the perforation must be determined. Often this requires a biopsy of the perforation to rule out autoimmune causes. If a known cause such as cocaine is the offending agent, it must be ensured that the patient is not still using the irritant.

For those that are determined to be medically cleared for surgery, the anatomical location and size of the perforation must be determined. This is often done with a combination of a CT scan of the sinuses without contrast and an endoscopic evaluation by an Ear Nose and Throat doctor. Once dimensions are obtained the surgeon will decide if it is possible to close the perforation. Multiple approaches to access the septum have been described in the literature. While sublabial and midfacial degloving approaches have been described, the most popular today is the rhinoplasty approach. This can include both open and closed methods. The open method results in a scar on the columella, however, it allows for more visibility to the surgeon. The closed method utilizes an incision all on the inside of the nose. The concept behind closure includes bringing together the edges of mucosa on each side of the perforation with minimal tension. An interposition graft is also often used. The interposition graft provides extended stability and also structure to the area of the perforation. Classically, a graft from the scalp utilizing temporalis fascia was used. Kridel, et al., first described the usage of acellular dermis so that no further incisions are required; they reported an excellent closure rate of over 90%. Overall perforation closure rates are variable and often determined by the skill of the surgeon and technique used. Often surgeons who claim a high rate of closure choose perforations that are easier to close. An open rhinoplasty approach also allows for better access to the nose to repair any concurrent nasal deformities, such as saddle nose deformity, that occur with a septal perforation.