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Although astigmatism may be asymptomatic, higher degrees of astigmatism may cause symptoms such as blurred vision, double vision, squinting, eye strain, fatigue, or headaches. [7] Some research has pointed to the link between astigmatism and higher prevalence of migraine headaches.
Skin cancers are cancers that arise from the skin. They are due to the development of abnormal cells that have the ability to invade or spread to other parts of the body. [ 10] Skin cancer is the most commonly diagnosed form of cancer in humans. [ 11][ 12][ 13] There are three main types of skin cancers: basal-cell skin cancer (BCC), squamous ...
Cutaneous squamous-cell carcinoma is the second-most common cancer of the skin (after basal-cell carcinoma, but more common than melanoma). It usually occurs in areas exposed to the sun. Sunlight exposure and immunosuppression are risk factors for SCC of the skin, with chronic sun exposure being the strongest environmental risk factor. [26]
Most patients are diagnosed between the age of 30-50. Tenosynovial giant cell tumor ( TGCT) is a group of rare, typically non-malignant tumors of the joints. TGCT tumors often develop from the lining of joints (also known as synovial tissue). [ 1][ 2][ 2]: 100 [ 3][ 3]: 245 . Common symptoms of TGCT include swelling, pain, stiffness and reduced ...
Astigmatism, a disorder that affects how the eyes focus light, can be exacerbated at night. Blurry vision and headaches are symptoms of astigmatism. Why astigmatism causes blurry vision ...
Atypical trigeminal neuralgia ( ATN ), or type 2 trigeminal neuralgia, is a form of trigeminal neuralgia, a disorder of the fifth cranial nerve. This form of nerve pain is difficult to diagnose, as it is rare and the symptoms overlap with several other disorders. [ 1] The symptoms can occur in addition to having migraine headache, or can be ...
Actinic keratosis ( AK ), sometimes called solar keratosis or senile keratosis, [ 1][ 2] is a pre-cancerous [ 3] area of thick, scaly, or crusty skin. [ 4][ 5] Actinic keratosis is a disorder ( -osis) of epidermal keratinocytes that is induced by ultraviolet (UV) light exposure ( actin- ). [ 6] These growths are more common in fair-skinned ...
Acral lentiginous melanoma is the most common subtype in people with darker skins and is rare in people with lighter skin types. [ 7] It is not caused by exposure to sunlight or UV radiation, and wearing sunscreen does not protect against it. Acral lentiginous melanoma is commonly found on the palms, soles, under the nails, and in the oral mucosa.